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INTERNATIONAL JOURNAL OF COSMETIC SCIENCE / Société Française de Cosmétologie . Vol. 44, N° 1Mention de date : 02/2022Paru le : 29/03/2022 |
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Ajouter le résultat dans votre panierAn updated review on efficacy and benefits of sweet almond, evening primrose and jojoba oils in skin care applications / Jürgen Blaak in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : An updated review on efficacy and benefits of sweet almond, evening primrose and jojoba oils in skin care applications Type de document : document électronique Auteurs : Jürgen Blaak, Auteur ; Peter Staib, Auteur Année de publication : 2022 Article en page(s) : p. 1-9 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides gras
Antioxydants
Dermo-cosmétologie
Huile d'onagreL'onagre est une plante herbacée bisannuelle de la famille des onagracées. Caractérisée par des fleurs jaunes parfumées, qui s’ouvrent à la tombée de la nuit, elle est surnommée "primevère du soir" et "belle de nuit". Le fruit contient des petites graines noires très riches en acides gras, desquelles sont extraites l’huile d’onagre (réputée pour ses vertus médicinales).
Le nom "onagr" vient de la ressemblance de la forme des feuilles avec celle des oreilles de l’âne sauvage du même nom. Séchée, la racine de l’onagre a une odeur de vin, ce qui expliquerait son étymologie latine "oenothera", du grec oinos (vin) et théro (conserver) (3). Il existe environ 80 espèces d'onagre. La plus répandue est l'onagre bisannuelle (Oenothera biennis). Ses feuilles, racines, fruits et graines sont comestibles.
L'onagre est originaire d’Amérique du Nord. Les Amérindiens la cultivaient pour ses propriétés médicinales. Ils l’utilisaient notamment sous forme de cataplasme contre les affections cutanées. L’onagre est arrivée en Europe au XVIIème siècle. Présentée sous le nom de "panacée du roi", elle est rapidement devenue un remède populaire.
L'huile d’onagre contient des acides gras poly-insaturés de type oméga 6 : plus de 65% d'acide linoléique et 7% à 14% d'acide gamma-linolénique. Elle contient aussi 5 à 11% d’acide gras mono-insaturés de type oméga 9, l'acide oléique, et des acides gras saturés : 2 à 3% d'acide stéarique, 5 à 7% d'acide palmitique. Elle est aussi composée de vitamines E et F, d'acides triterpéniques et de polyphénols. Ces composés lui confèreraient des propriétés antioxydantes et anti-inflammatoires. L'acide gamma-linolénique est un précurseur de la production des prostaglandines E1, qui jouent un rôle dans la baisse de l’inflammation par exemple. L'acide linoléique contrôle les taux de cholestérol.
L’onagre est originaire d’Amérique du Nord. Les Amérindiens l’utilisaient pour ses propriétés médicinales. Riches en divers acides gras et vitamines, la plante aiderait à soulager les démangeaisons de la peau sèche, et agirait comme astringent cosmétique.
Huile essentielle d'amande douce
Huiles et graisses végétales
Ingrédients cosmétiques
Peau -- Soins et hygiène
Phytostérols
Vitamine EIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Background : Renewed consumer and industry interest in natural ingredients has led to a large growth of natural cosmetics. This has put pressure on formulation skills and product claims when it comes to using natural compounds. Taking a strategic and comprehensive approach in viewing natural ingredients, including natural oils, as ‘active’ ingredients rather than just providing for so-called ‘natural’ claims, aids both innovation and development. Given the ever-increasing consumer demand for natural ingredients, and more importantly the demand for effective natural ingredients including plant oils, it is important for the cosmetic industry to re-evaluate them in this context.
- Method : The objectives of this review are to provide an update of three popular cosmetic plant oils -Sweet Almond, Evening Primrose and Jojoba – in terms of their cosmetic applications as ‘active’ ingredients. This review highlights the activity of these oils, in the management of dry skin, ageing skin, juvenile skin, atopic dermatitis, scalp conditions and their wider potential. Attention is given to formulation considerations where the content of these oils impacts product oxidation, skin penetration and stratum corneum homeostasis.
- Results : Benefits of these oils have been well documented both pre-clinically and clinically. Historically, they have been used for hundreds if not thousands of years for their management and treatment of various skin and other ailments. Given the discrepancies in some clinical data presented for a variety of dermatoses, the importance of the choice of oil and how to formulate with them within the context of the epidermal barrier function, skin penetration and toxicity cannot be underestimated. Care should be taken in terms of the quality and stability of theses oils, as well as ensuring best formulation type, if the reported activities of these oils are to be achieved with consistency. Despite discrepancies in the literature and questionable study designs, it is clear that Sweet Almond, Evening Primrose and Jojoba oils do have skin care benefits for both adult and juvenile applications.
- Conclusion : They are effective ingredients for skin care preparations to strengthen stratum corneum integrity, recovery and lipid ratio. Nevertheless, further experimental data are required concerning the impact on stratum corneum physiology and structure.Note de contenu : - Lipid profile
- Antioxidant profiles
- Dermato-cosmetic effects : Dry and xerotic skinAtopic dermatitis- Other dermatoses- Newborn and juvenile skin - Aged and very old skin
- Formulation considerations
- Table 1 : (A) Key fatty acid composition of sweet almond oil, evening primrose oil and jojoba oil. (B) Key phytosterol content of sweet almond oil, evening primrose oil and jojoba oil
- Table 2 : Tocopherol content of Sweet Almond oil, Evening Primrose oil and Jojoba oilDOI : https://doi.org/10.1111/ics.12758 En ligne : https://drive.google.com/file/d/1Xfq8vY51SkVFidpMSr8322n-Mt3FquCM/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37255
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 1-9[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Characterization of photoproducts and global ecotoxicity of chlorphenesin : A preservative used in skin care products / Manel Ben Ouaghrem in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Characterization of photoproducts and global ecotoxicity of chlorphenesin : A preservative used in skin care products Type de document : document électronique Auteurs : Manel Ben Ouaghrem, Auteur ; Ségolène de Vaugelade, Auteur ; Sophie Bourcier, Auteur ; Christophe Genty, Auteur ; Stéphane Pirnay, Auteur ; Stéphane Bouchonnet, Auteur Année de publication : 2022 Article en page(s) : p. 10-19 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chimie analytique
ChlorphénésineLa chlorphénésine est un composé synthétique qui appartient à la classe des composés organiques appelés organohalogénés. La chlorphénésine est un éther de phénol (3-(4-chlorophénoxy)-1,2-propanediol), dérivé du chlorophénol contenant un atome de chlore lié par covalence.
La chlorphénésine est produite en condensant des quantités équimolaires de p-chlorphénol et de glycidol en présence d'une amine tertiaire ou d'un sel d'ammonium quaternaire en tant que que catalyseur.
Elle se présente sous forme de poudre blanche inodore au goût amer. Sa solubiité dans l'eau est inférieure à 1%. Cependant, elle est soluble dans l'éther et légèrement soluble dans les huiles fixes.
Cette molécule est réputée pour ses excellentes propriétés antimicrobiennes, antifongiques et activatrices en association avec d'autres agents de conservation. Elle est résistante à la chaleur et possède une bonne tolérance cutanée. (Expertox)
Conservateurs (chimie)
Ecotoxicologie
Emulsions -- Emploi en cosmétologie
Formulation (génie chimique) -- Stabilité
Ingrédients cosmétiques
PhotochimieIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Photolysis experiments of chlorphenesin, used as a preservative in cosmetic products, were performed in aqueous solution and on a cream used in cosmetics. Three by-products resulting from the direct UV-visible photodegradation of chlorphenesin were characterized by chromatography (gas and liquid) coupled with tandem mass spectrometry (GC-MS/MS and LC-HR MS/MS) and found in both solutions. In vitro tests on Vibrio fischeri bacteria showed that the overall ecotoxicity of chlorphenesin increased with increasing irradiation time in both samples. In silico QSAR (Quantitative Structure Activity Relationship) tests were performed using T.E.S.T. (Toxicity Estimation Software Tool). Among the degradation compounds identified, 4-chlorophenol must contribute to the increased ecotoxicity of the photolyzed solution since the in silico LC50 estimated for all tests performed are always lower than those obtained for chlorphenesin. Note de contenu : - EXPERIMENTAL : Chemicals and reagents - Samples preparations - Sample extraction - Photolysis experiments - GC–MS operating conditions - LC–MS operating conditions - In silico toxicity estimation - In vitro bioassays
- RESULTS AND DISCUSSION : Characterization of the photoproducts of CHL - Mechanism of UV-induction of CHL transformation - Toxicity predication - In silico toxicity estimation - In vitro bioassays
- Table 1 : Qualitative and quantitative compositions of cosmetic emulsion
- Table 2 : Analytical results obtained in GC-MS for CHL and its photoproducts (PPs) formed in aqueous solution and cosmetic emulsion
- Table 3 : Analytical results obtained in LC – HR MS/MS for CHL and its photoproducts (PPs) formed in aqueous solution and cosmetic emulsion
- Table 4 : In silico toxicity predictions by T.E.S.T software
- Table 5 : EC50 on Vibrio fischeri after three times of incubation (5, 15 and 30 min)DOI : https://doi.org/10.1111/ics.12760 En ligne : https://drive.google.com/file/d/1bcit0ZPpk4ebEQ9a09aiXdgzYNzlYjZF/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37256
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 10-19[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Friction dynamics of moisturized human skin under non-linear motion / Yuka Sakata in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Friction dynamics of moisturized human skin under non-linear motion Type de document : document électronique Auteurs : Yuka Sakata, Auteur ; Hiroyuki Mayama, Auteur ; Yoshimune Nonomura, Auteur Année de publication : 2022 Article en page(s) : p. 20-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dermo-cosmétologie
Frottements (mécanique)
GlycérineLe glycérol, ou glycérine, est un composé chimique de formule HOH2C–CHOH–CH2OH. C'est un liquide incolore, visqueux et inodore au goût sucré, utilisé dans de nombreuses compositions pharmaceutiques. Sa molécule possède trois hydroxyles correspondant à trois fonctions alcool responsables de sa solubilité dans l'eau et de sa nature hygroscopique. Un résidu glycérol constitue l'articulation centrale de tous les lipides de la classe des triglycérides et des phosphoglycérides.
PROPRIETES PHYSIQUES : Le glycérol se présente sous la forme d'un liquide transparent, visqueux, incolore, inodore, faiblement toxique si ingéré (mais laxatif à haute dose), au goût sucré.
Le glycérol peut se dissoudre dans les solvants polaires grâce à ses trois groupes hydroxyles. Il est miscible dans l'eau et l'éthanol ; et insoluble dans le benzène, le chloroforme et le tétrachlorométhane.
Son affinité avec l'eau le rend également hygroscopique, et du glycérol mal conservé (hors dessicateur ou mal fermé) se dilue en absorbant l'humidité de l'air.
- PROPRIETES CHIMIQUES : Dans les organismes vivants, le glycérol est un composant important des glycérides (graisses et huiles) et des phospholipides. Quand le corps utilise les graisses stockées comme source d'énergie, du glycérol et des acides gras sont libérés dans le sang.
- DESHYDRATATION : La déshydratation du glycérol est faite à chaud, en présence d'hydrogénosulfite de potassium (KHSO3) et produit de l'acroléine
- ESTERIFICATION : L'estérification du glycérol conduit à des (mono, di ou tri) glycérides.
- AUTRES PROPRIETES : Le glycérol a un goût sucré de puissance moitié moindre que le saccharose, son pouvoir sucrant est de 0,56-0,64 à poids égal13.
Le glycérol a des propriétés laxatives et diurétiques faibles.
Comme d'autres composés chimiques, tels que le benzène, son indice de réfraction (1,47) est proche de celui du verre commun (~1,50), permettant de rendre "invisibles" des objets en verre qui y seraient plongés.
Hydratation
Mesure
Peau -- Soins et hygiène
Peau humaine
ViscoélasticitéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Evaluating friction in human skin is important to assess its condition and the effects of skincare cosmetics. In this study, we evaluated the friction dynamics of moisturized skin to show the effects of moisturization on its mechanical properties.
- Methods : Friction force was evaluated using a sinusoidal motion friction evaluation system. The skin of the upper arm of 20 subjects was rubbed using a contact probe. The water content of the stratum corneum and the softness of the skin were measured using a Corneometer and a Cutometer, respectively.
- Results : When human skin was treated with water or 10 wt% glycerol aqueous solution, the friction coefficients increased by 0.23 ± 0.01 and 0.17 ± 0.14, respectively, and the delay times (normalized by calculating the time interval from contact with the probe to the friction response divided by the friction time for one round trip) increased by 0.048 ± 0.034 and 0.055 ± 0.024, respectively. Three different friction profiles were observed: (a) a stable pattern, in which a smooth profile was observed during the sliding process; (b) an oscillation pattern, in which significant oscillation was obtained; and (c) a stick pattern, in which the friction coefficient increased even during the deceleration process. In the case of untreated skin, the oscillation pattern was observed for the majority of subjects. The appearance rate of the stick pattern increased by 80.3% ± 29.4% after treatment with 10 wt% glycerol aqueous solution. These characteristic friction profiles can be explained by a two-step friction model consisting of two modes: (a) friction at the skin surface and (b) the delayed response due to skin deformation.
- Conclusion : Moisturizing the skin with water or 10 wt% glycerol aqueous solution increased the friction coefficient and delay time, dramatically changing the friction profile. These changes were considered to be due to the swelling and softening of the stratum corneum and the increased true contact area between the contact probe and the skin surface.Note de contenu : - MATERIAL AND METHODS : Materials - Friction force measurement - Dermatological measurements - Multiple comparison test - T-test
- RESULTS : Friction profile of human skin - Change over time in friction coefficient and delay time with application of water or glycerol aqueous solution - Difference in moisturizing effect between water and 10 wt% glycerol aqueous solution - Change of the expression rate of three friction patterns
- DISCUSSION : The change with moisturization in friction coefficient μ and delay time δ - Three friction patterns on moisturized human skinDOI : https://doi.org/10.1111/ics.12751 En ligne : https://drive.google.com/file/d/1YiU7XPUEVmTuP7yhK8XfJHHaF6Arrjw5/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37257
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 20-29[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Sustainable thermoresponsive whey protein- and chitosan-based oil-in-water emulsions for cosmetic applications / Sarah Speer in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Sustainable thermoresponsive whey protein- and chitosan-based oil-in-water emulsions for cosmetic applications Type de document : document électronique Auteurs : Sarah Speer, Auteur ; Samiul Amin, Auteur Année de publication : 2022 Article en page(s) : p. 30-41 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères
ChitosaneLe chitosane ou chitosan est un polyoside composé de la distribution aléatoire de D-glucosamine liée en ß-(1-4) (unité désacétylée) et de N-acétyl-D-glucosamine (unité acétylée). Il est produit par désacétylation chimique (en milieu alcalin) ou enzymatique de la chitine, le composant de l'exosquelette des arthropodes (crustacés) ou de l'endosquelette des céphalopodes (calmars...) ou encore de la paroi des champignons. Cette matière première est déminéralisée par traitement à l'acide chlorhydrique, puis déprotéinée en présence de soude ou de potasse et enfin décolorée grâce à un agent oxydant. Le degré d'acétylation (DA) est le pourcentage d'unités acétylées par rapport au nombre d'unités totales, il peut être déterminé par spectroscopie infrarouge à transformée de Fourier (IR-TF) ou par un titrage par une base forte. La frontière entre chitosane et chitine correspond à un DA de 50 % : en deçà le composé est nommé chitosane, au-delà , chitine. Le chitosane est soluble en milieu acide contrairement à la chitine qui est insoluble. Il est important de faire la distinction entre le degré d'acétylation (DA) et le degré de déacétylation (DD). L'un étant l'inverse de l'autre c'est-à -dire que du chitosane ayant un DD de 85 %, possède 15 % de groupements acétyles et 85 % de groupements amines sur ses chaînes.
Le chitosane est biodégradable et biocompatible (notamment hémocompatible). Il est également bactériostatique et fongistatique.
Le chitosane est également utilisé pour le traitement des eaux usées par filtration ainsi que dans divers domaines comme la cosmétique, la diététique et la médecine.
Couleur
Emulsions -- Emploi en cosmétologie
Formulation (Génie chimique)
LactosérumLe lactosérum, ou petit-lait ou sérum, est la partie liquide issue de la coagulation du lait. C'est un produit agricole ou agro-industriel.
En dehors de l'eau, le lactosérum contient du lactose (de 70 % à 75 % de la matière sèche), des protéines solubles (de 10 % à 13 %), des vitamines (thiamine-B1, riboflavine-B2 et pyridoxine-B6) et des minéraux (essentiellement du calcium).
Matériaux thermosensibles
Protéines
Rhéologie
ViscositéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : In this study, the biopolymers whey protein and chitosan were used to create a thermoresponsive emulsion. The impact of the inclusion of chitosan and inclusion of specific oils on the rheological properties and response to temperature were investigated by a stepwise build-up from simple solutions to oil-in-water (O/W) emulsions. Whey protein (WP) concentration and chitosan concentration were varied. The results may help develop strategies for incorporating thermoresponsive materials in stable and high-performing formulations for use in cosmetics.
- Methods : Solutions of whey protein concentrate (WPC) by itself, chitosan by itself and the combination of the two at various concentrations were tested with flow sweeps, temperature sweeps and frequency sweeps. Then, three different oils of jojoba, avocado and silicone were included to form emulsions and the tests were repeated to determine flow behaviour, response to temperature and structure.
- Results : By comparing 15 wt. % and 20 wt. % WP solutions, it was found that 15 wt. % WP could provide good viscosities and modulus at a lower amount of material used. The solution composed of 15 wt. % WP, and 0.5 wt. % chitosan was found to have the greatest structural response to temperature compared to solutions with 1.0 wt. % and 1.5 wt. % chitosan. Compared to the addition of 10 wt. % silicone and 10 wt. % avocado oil to form emulsions, the addition of 10 wt. % jojoba oil further strengthened the gel network the most. The final emulsion with pigment added had improved viscosity and thermoresponsive behaviour. The WP and chitosan emulsions were shear thinning, elastically dominated and behaved as classical gels. The behaviour of the emulsions was dependent upon the hydrophobic interactions between the protein and the oil and the electrostatic interactions between the protein and the chitosan.
- Conclusion : An emulsion composed of 15 wt. % WP, 10 wt. % jojoba oil and 0.5 wt. % chitosan solution was found to have the greatest structural response to temperature. This study of an O/W emulsion containing whey protein concentrate and chitosan demonstrated that different oils and conditions can be used to tune thermoresponsive and rheological behaviour.Note de contenu : - MATERIALS AND METHODS : Materials - Sample preparation - Rheological propertie
- RESULTS AND DISCUSSION : WP solutions - WP emulsions - WP and chitosan solutions - WP and chitosan emulsions - WP and chitosan emulsion with pigmentDOI : https://doi.org/10.1111/ics.12752 En ligne : https://drive.google.com/file/d/1mGRuLIfVFX8PJZzbl8X4h_8XMg-qdz4a/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37258
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 30-41[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Chemically characterizing the cortical cell nano-structure of human hair using atomic force microscopy integrated with infrared spectroscopy (AFM-IR) / A. P. Fellows in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Chemically characterizing the cortical cell nano-structure of human hair using atomic force microscopy integrated with infrared spectroscopy (AFM-IR) Type de document : document électronique Auteurs : A. P. Fellows, Auteur ; M. T. L. Casford, Auteur ; P. B. Davies, Auteur Année de publication : 2022 Article en page(s) : p. 42-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Caractérisation
Cellules corticales
Cheveux -- analyse
Microscopie à force atomique
NanostructuresIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : The use of conventional microscopy and vibrational spectroscopy in the optical region to investigate the chemical nature of hair fibres on a nanometre scale is frustrated by the diffraction limit of light, prohibiting the spectral elucidation of nanoscale sub-structures that contribute to the bulk properties of hair. The aim of this work was to overcome this limitation and gain unprecedented chemical resolution of cortical cell nano-structure of hair.
- Methods : The hybrid technique of AFM-IR, combining atomic force microscopy with an IR laser, circumvents the diffraction limit of light and achieves nanoscale chemical resolution down to the AFM tip radius. In this work, AFM-IR was employed on ultra-thin microtomed cross-sections of human hair fibres to spectrally distinguish and characterize the specific protein structures and environments within the nanoscale components of cortical cells.
- Results : At first, a topographical and chemical distinction between the macrofibrils and the surrounding intermacrofibillar matrix was achieved based on 2.5 × 2.5 μm maps of cortical cell cross-sections. It was found that the intermacrofibrillar matrix has a large protein content and specific cysteine-related residues, whereas the macrofibrils showed bigger contributions from aliphatic amino acid residues and acidic-/ester-containing species (e.g. lipids). Localized spectra recorded at a spatial resolution of the order of the AFM tip radius enabled the chemical composition of each region to be determined following deconvolution of the Amide-I and Amide-II bands. This provided specific evidence for a greater proportion of α-helices in the macrofibrils and correspondingly larger contributions of β-sheet secondary structures in the intermacrofibrillar matrix, as inferred in earlier studies. Analysis of the parallel and antiparallel β-sheet structures, and of selected dominant amino acid residues, yielded further novel composition and conformation results for both regions.
- Conclusion : In this work, we overcome the diffraction limit of light using atomic force microscopy integrated with IR laser spectroscopy (AFM-IR) to characterize sub-micron features of the hair cortex at ultra-high spatial resolution. The resulting spectral analysis shows clear distinctions in the Amide bands in the macrofibrils and surrounding intermacrofibrillar matrix, yielding novel insight into the molecular structure and intermolecular stabilization interactions of the constituent proteins within each cortical component.Note de contenu : - Sample preparation
- AFM-IR analysis
- Spectral analysis
- Table 1 : Assignments of the bands observed in Figure 2 based on data reported in the literature
- Table 2 : Contributions in the Amide-I and Amide-II spectral regions obtained by second-derivative peak fitting for each of the spectra shown
- Table 3 : Summary of the contributing residues and secondary structures present in the hair cortex indicating the regions of greater band contributionsDOI : https://doi.org/10.1111/ics.12753 En ligne : https://drive.google.com/file/d/1HoX77-CB6ZECCPsdUFJmdOi-fqSTdByF/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37259
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 42-55[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Evaluation of aloins, pH and moisture in aloe leaf gel-based personal care products / Gereziher Sibhat in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Evaluation of aloins, pH and moisture in aloe leaf gel-based personal care products Type de document : document électronique Auteurs : Gereziher Sibhat, Auteur ; Getu Kahsay, Auteur ; van Schepdael Ann, Auteur ; Erwin Adams, Auteur Année de publication : 2022 Article en page(s) : p. 74-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aloès et constituants
AloïneL'aloïne, aussi connue sous le nom de barbaloïne, est un composé amer de couleur jaune-marron. Il est présent dans l'exudat d'au moins 68 espèces d'aloès à des concentrations variant de 0,1 à 6,6% m des feuilles sèches (ce qui fait 3 à 35 % de l'exudat total).
Chimie analytique
Chromatographie en phase liquide
Cosmétiques -- Aspect sanitaire
Ingrédients cosmétiques
Justification de l'allégation
Qualité -- Contrôle
Tests de sécuritéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Some easily applicable analytical methods were explored to evaluate the quality of personal care products containing aloe leaf gel. Aloins should be absent in these products in view of their side effects. To check this, liquid chromatography (LC) was applied.
- Methods : The LC method used a C18 monolithic column combined with gradient elution and ultraviolet (UV) detection. The mobile phase consisted of a mixture of 0.1% formic acid in water (A) and 0.1% formic acid in acetonitrile (B). The method was validated with respect to specificity, linearity, precision and accuracy. Next, it was practically applied for the analysis of commercial samples. In addition, the pH and moisture content were determined.
- Results : The LC results indicated that aloins were detected in 25% of the analysed commercial samples. Further, it turned out that 42% of the test samples were found to be in the basic pH range and 33% of them contained excessive moisture.
- Conclusion : Proper quality control and adequate labelling of aloe leaf gel-based cosmetics are mandatory to avoid side effects.Note de contenu : - MATERIALS AND METHODS : Chemicals and reagents - Preparation of standards and sample solutions - Liquid chromatographic analysis - Development and validation of the liquid chromatographic method - Determination of pH - Determination of moisture content
- RESULTS AND DISCUSSION : Extraction procedure prior to LC - LC method validation - Stability of sample solutions - Analysis of commercial samples
- Table 1 : Regression analysis, LOD and LOQ of the proposed LC method for the determination of aloins A and B
- Table 2 : Recovery results (%) for aloin A and aloin B after spiking of a shampoo (SH1), soap (S1), hair conditioner (HC), treatment oil
(TO) and powder (P2)
- Table 3 : Precision results for aloin A and aloin B after spiking
- Table 4 : Aloin content (n = 6) of cosmetic products
- Table 5 : Moisture content and pH values of aloe gel-based skin and hair care formulationsDOI : https://doi.org/10.1111/ics.12755 En ligne : https://drive.google.com/file/d/1Y7AzsZjHAMEboO5cJrBqdWQ_SX05aAJ-/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37260
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 74-81[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Redox proteomics analysis of hair shaft proteins upon hydrothermal and alkaline insult / Evelyne Maes in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Redox proteomics analysis of hair shaft proteins upon hydrothermal and alkaline insult Type de document : document électronique Auteurs : Evelyne Maes, Auteur ; Santanu Deb-Choudhury, Auteur ; Stefan Clerens, Auteur ; Stephanie L. Davis, Auteur ; Michael G. Davis, Auteur ; J. M. Marsh, Auteur ; Robert J. Willicut, Auteur ; Jolon M. Dyer, Auteur Année de publication : 2022 Article en page(s) : p. 82-90 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Cheveux -- analyse
Cheveux -- Soins et hygiène
Chimie analytique
Oxydoréduction
Produits capillaires
ProtéomiqueLa protéomique désigne la science qui étudie les protéomes, c'est-à -dire l'ensemble des protéines d'une cellule, d'un organite, d'un tissu, d'un organe ou d'un organisme à un moment donné et sous des conditions données.
Dans la pratique, la protéomique s'attache à identifier de manière globale les protéines extraites d'une culture cellulaire, d'un tissu ou d'un fluide biologique, leur localisation dans les compartiments cellulaires, leurs éventuelles modifications post-traductionnelles ainsi que leur quantité.
Elle permet de quantifier les variations de leur taux d'expression en fonction du temps, de leur environnement, de leur état de développement, de leur état physiologique et pathologique, de l'espèce d'origine. Elle étudie aussi les interactions que les protéines ont avec d'autres protéines, avec l'ADN ou l'ARN, ou d'autres substances.
La protéomique fonctionnelle étudie les fonctions de chaque protéine.
La protéomique étudie enfin la structure primaire, secondaire et tertiaire des protéines. (Wikipedia)Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Human hair is regularly subjected to chemical and physical insults, such as heat, UV-irradiation and alkaline hair care products. These insults result in molecular modifications at the hair protein level that underpin mechanical and sensory property changes in the fibres. These changes can manifest itself in reduced hair quality and performance attributes observable to the consumer. In this work, changes in protein modification as a result of heat and alkaline treatments are determined.
- Methods : Redox proteomic profiling using high-resolution mass spectrometry was applied to map and evaluate amino acid residue modifications in human hair exposed to a combination of thermal treatments and alkali exposure with the aim to understand the underlying chemical processes.
- Results : Our results show that an increase in redox-related modifications is associated with exposure to higher levels of hydrothermal and alkaline insult. Post-translational modification profiling at the protein primary structural level delivered some further insights into the site-specificity of these modifications, with a clear increase in the number of cysteic acid modifications noticed in samples subjected to more extreme insults.
- Conclusion : Pinpointing modification sides within proteins and the hair shaft proteome can be used as a basis for employing mitigation or repair strategies of hair protein damage caused by environmental or hair treatment-related insults.Note de contenu : - Experimental design
- Sample preparation
- LC-MS/MS
- Protein identification
- Redox assessment
- ScoringDOI : https://doi.org/10.1111/ics.12756 En ligne : https://drive.google.com/file/d/12gq0qXOVakOj9x0ajDqBLGR9b1WAVMIM/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37261
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 82-90[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Combining DNA barcoding and chemical fingerprints to authenticate lavender raw material / Florian Philippe in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Combining DNA barcoding and chemical fingerprints to authenticate lavender raw material Type de document : document électronique Auteurs : Florian Philippe, Auteur ; Nelly Dubrulle, Auteur ; Benjamin Marteaux, Auteur ; Brice Bonnet, Auteur ; Patrick Choisy, Auteur ; Jean-Yves Berthon, Auteur ; Laurence Garnier, Auteur ; Nadine Leconte, Auteur ; Sandrine Milesi, Auteur ; Pierre-Yves Morvan, Auteur ; Alex Saunois, Auteur ; Jian-Sheng Sun, Auteur ; Sandrine Weber, Auteur ; Nicole Giraud, Auteur Année de publication : 2022 Article en page(s) : p. 91-102 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bio-informatique La bio-informatique, ou bioinformatique, est un champ de recherche multi-disciplinaire de la biotechnologie où travaillent de concert biologistes, médecins, informaticiens, mathématiciens, physiciens et bio-informaticiens, dans le but de résoudre un problème scientifique posé par la biologie. Plus généralement, la bio-informatique est l'application de la statistique et de l'informatique à la science biologique.
Chimie analytique
Code-barres
Lavande et constituants
plantes -- IdentificationIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : This study was initiated and conducted by several laboratories, 3 of the main cosmetic ingredient suppliers and 4 brands of cosmetics in France. Its objective is to show the interest and robustness of coupling chemical and genetic analyses in the identification of plant species. In this study, the Lavandula genus was used.
- Methods : In this study, we used two analytical methods. Chemical analysis from UHPLC (ultra-high-performance liquid chromatography) and genetic analysis from barcoding with genetic markers.
- Results : Eleven lavender species were selected (botanically authenticated) and analysed. The results show that three chemical compounds (coumaric acid hexoside, ferulic acid hexoside and rosmarinic acid) and three genetic markers (RbcL, trnH-psbA and ITS) are of interest for the differentiation of species of the genus lavandula.
- Conclusion : The results show that the combination of complementary analytical methods is a relevant system to prove the botanical identification of lavender species. This first study, carried out on a plant of interest for cosmetics, demonstrates the need for authentication using a tool combining genetic and chemical analysis as an advance over traditional investigation methods used alone, in terms of identification and authentication reliability.Note de contenu : - MATERIALS AND METHODS : Plant materials - DNA barcoding - UHPLC analysis
- RESULTS : UHPLC analysis - DNA barcoding analysis
- DISCUSSION : Chemical analysis - Genetic analysis - Association of chemical analysis and genetic analysis
- Table 1 : Markers and their characteristics
- Table 2 : Criteria for differentiating samplesDOI : https://doi.org/10.1111/ics.12757 En ligne : https://drive.google.com/file/d/1XKgM4Hec7oRN3Dwfa1lVsSqsCTK7JBWv/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37262
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 91-102[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Superior even skin tone and anti-ageing benefit of a combination of 4-hexylresorcinol and niacinamide / Rezwan Shariff in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Superior even skin tone and anti-ageing benefit of a combination of 4-hexylresorcinol and niacinamide Type de document : document électronique Auteurs : Rezwan Shariff, Auteur ; Yaping Du, Auteur ; Maitreyee Dutta, Auteur ; Satish Kumar V, Auteur ; Sreenivasa Thimmaiah, Auteur ; Chandraprabha Doraiswamy, Auteur ; Annu Kumari, Auteur ; Vaidehi Kale, Auteur ; Nirmala Nair, Auteur ; Shuliang Zhang, Auteur ; Manoj Joshi, Auteur ; Uma Santhanam, Auteur ; Qiu Qiang, Auteur ; Anita Damodaran, Auteur Année de publication : 2022 Article en page(s) : 103-117 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Anti tyrosinase
Antiâge
Cellules -- Cultures et milieux de culture
Clarté de la peau
Cosmétiques
Dermo-cosmétologie
Nicotinamide
Peau -- Physiologie
Peau -- Soins et hygiène
Produits hydratants
RésorcinolLa résorcine (ou résorcinol, ou benzène-1,3-diol en nomenclature IUPAC) est l'isomère méta du benzènediol. C'est un diphénol (C6H4(OH)2) utilisé comme antiseptique et pour la préparation de certains colorants : bleu de résorcine, vert de résorcine. Le terme est composé à partir de résine et d'orcine.
PROPRIETES CHIMIQUES, TOXICITE :
Le résorcinol donne des réactions de condensation avec de nombreux composés organiques. On obtient, par exemple, par condensation d'alcools primaires avec le résorcinol des benzéines et des naphtaléines. Ces composés, en solution alcaline, présentent une fluorescence qui varie en fonction du nombre et de la position des groupements -OH et -COOH.
Il est utilisé, comme réactif très sensible, pour la recherche de quantités minimes d'acide tartrique et de zinc. Il peut irriter la peau et les muqueuses. Son absorption peut provoquer des troubles sanguins, des convulsions et même la mort.
UTILISATION :
Le résorcinol, obtenu industriellement par fusion de l'acide métabenzène disulfonique avec un excès de soude a de nombreuses utilisations industrielles : tannage, fabrication de résines
Notamment comme colle en construction navale bois,contreplaqué marine,du fait de sa bonne tenue à l'eau,remplacée à l'heure actuelle par les résines époxy : fabrication d'adhésifs, préparation d'acide, para-aminosalicylique, fabrication d'explosifs et de colorants,
cosmétiques, teinture et impression des tissus, antiseptique, antifongique et desséchant.
Taches pigmentaires (dermatologie)Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objectives : To demonstrate the synergistic effect of 4-hexylresorcinol (4-HR) with niacinamide in boosting anti-melanogenic efficacy in vitro and establish the in vivo efficacy and safety of the combination in a human trial.
- Methods : Primary human epidermal melanocytes and 3D pigmented skin equivalents were treated with 4-HR, niacinamide, and their combinations for their effect on pigmentation. This was followed by a randomized, double-blind, split-face clinical study in Chinese subjects, and effects on skin tone, hyperpigmentation, fine lines and wrinkles, hydration, and skin firmness were measured for a 12-week study period.
- Results : In vitro tyrosinase enzyme activity studies showed that 4-HR is one of the most potent tyrosinase inhibitors. The combination of 4-HR and niacinamide showed a synergistic reduction in melanin production in cultured melanocytes and lightened the 3D skin equivalent model. In vitro as well as in the human trial, the combination of 4-HR and niacinamide showed significantly improved efficacy over niacinamide alone on hyperpigmentation spots as measured by L*, the visual appearance of fine lines and wrinkles in crow's feet and perioral area and skin firmness, with no product-related adverse events.
- Conclusions : A formulation containing a combination of 4-HR and niacinamide delivered superior skin tone and anti-ageing benefits significantly better than niacinamide alone with no adverse events. This study demonstrates that a product designed to affect multiple pathways of melanogenesis, inflammation, and ageing may provide an additional treatment option, beyond hydroquinone and retinoids, for hyperpigmentation and ageing.Note de contenu : - MATERIALS AND METHODS : Chemicals & reagents - Cell culture - Tyrosinase enzyme activity assay - Procollagen production - Clinical study design - Statistical analysis
- RESULTS AND DISCUSSION : 4-HR plus niacinamide stimulates pro-collagen synthesis in dermal fibroblasts - 4-HR plus niacinamide combination inhibits melanin in 3D skin equivalent models and reduces hyperpigmentation in subjects - 4-HR and niacinamide synergize to boost the anti-ageing efficacy of the skin formulation
- Table 1 : Inhibitory concentration for 50% inhibition of tyrosinase enzyme activity (IC50) of 4-HR and other skin lightening agents carried out using recombinant human tyrosinase and DOPA as a substrate
- Table 2 : Overview of the effect of the two treatments on various skin lightening, ageing, firmness, and hydration parametersDOI : https://doi.org/10.1111/ics.12759 En ligne : https://drive.google.com/file/d/1swlsmqC9pCeL1EvLT-p2NeiD-jVF6_2f/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37263
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - 103-117[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Safety and efficacy of combined essential oils for the skin barrier properties : In vitro, ex vivo and clinical studies / Victor H. P. Infante in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Safety and efficacy of combined essential oils for the skin barrier properties : In vitro, ex vivo and clinical studies Type de document : document électronique Auteurs : Victor H. P. Infante, Auteur ; Patricia Maria Berardo Gonçalves Maia Campos, Auteur ; Lorena Rigo Gaspar, Auteur ; Maxim E. Darvin, Auteur ; Johannes Schleusener, Auteur ; Karen C. Rangel, Auteur ; Martina C. Meinke, Auteur ; Jürgen Lademann, Auteur Année de publication : 2022 Article en page(s) : p. 118-130 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Barrière cutanée
Cosmétiques
Formulation (Génie chimique)
Huiles essentielles -- Analyse
Peau -- analyse
Peau -- Soins et hygiène
Pénétration (physique)
Produits de beauté
Spectroscopie Raman
Tests de toxicitéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : To evaluate the safety and the synergistic effects of tea tree, lavender, eucalyptus and tangerine essential oils in combination on the skin using in vitro, ex vivo and clinical studies.
- Methods : The phototoxicity was predicted using 3T3 neutral red uptake phototoxicity test (OECD TG 432). Skin penetration was evaluated by confocal Raman microspectroscopy using direct application of essential oils to pig ears. For the clinical studies, 40 participants were enrolled and randomized in three groups: (1) lavender, eucalyptus and tangerine, (2) the same essential oils plus melaleuca and (3) placebo group. The skin was evaluated by noninvasive techniques before and after a 90-day period of topical use.
- Results : The essential oils were non-phototoxic, but the tangerine oil showed dose-dependent cytotoxicity (IC50: 33.1 µg/ml), presenting 35% of penetration in the viable epidermis. On the contrary, 17.7 µg/ml in combination was applied per day in the clinical study and the penetration rate for the combinations (10%, 1.77 µg/ml achieving the viable epidermis) guaranteed the safety, since in the clinical study, the application of the four essential oils improved skin barrier and morphologic skin characteristics, as well as increased skin hydration and decreased sebum levels, with no unwanted effects reported.
- Conclusions : All essential oils studied were considered non-cytotoxic or non-phototoxic separately except tangerine, which present a dose-dependent cytotoxicity. Finally, the essential oils in combination in an appropriate amount were safe and effective in the improvement of the hydrolipidic balance and morphological properties of the skin.Note de contenu : - MATERIAL AND METHODS : Developed formulations - Photoxicity evaluation - Confocal raman microspectroscopy - Clinical study - Stratum corneum water content - Transepidermal water loss - Sebum content of the skin surface - Amount of sebum in the infundibulum - Reflectance confocal microscopy - Statistical analysis
- RESULTS : Phototoxicity - Skin penetration - Skin hydration –SCWC, TEWL and sebum amount - Reflectance confocal microscopy
- DISCUSSION : In vitro and ex vivo studies - In vivo efficacy study
- Table 1 : Phototoxicity assay of essential oils and their combinations in 3T3 fibroblast cells, expressed as mean photoeffect (MPE; n = 2)
- Table 2 : Epidermal thickness measured by RCM, according to group and time of usageDOI : https://doi.org/10.1111/ics.12761 En ligne : https://drive.google.com/file/d/1StU_2jXH8mIwzoWr0S8n1fzozbk0cTQp/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37264
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 118-130[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Rapid determination of L-ascorbic acid content in vitamin C serums by ultra-high-performance liquid chromatography–tandem mass spectrometry / Jessica Santos Pizzo in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Rapid determination of L-ascorbic acid content in vitamin C serums by ultra-high-performance liquid chromatography–tandem mass spectrometry Type de document : document électronique Auteurs : Jessica Santos Pizzo, Auteur ; Victor Hugo Maldonado Cruz, Auteur ; Carina Alexandra Rodrigues, Auteur Année de publication : 2022 Article en page(s) : p. 131-141 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie)
Antioxydants
Chromatographie en phase liquide à hautes performances
Cosmétiques -- Additifs
Cosmétiques -- Analyse
Pénétration (physique)
Qualité -- Contrôle
Sérums
Spectrométrie de masse
Vitamine CIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : This study aimed to develop and validate a rapid, simple, accurate and precise analytical method for the quantification of L-AA in vitamin C serums. Moreover, the developed method was further applied to determine L-AA in eight different brands of vitamin C serums. A complementary study was also carried out to evaluate the stability of L-AA in the vitamin C serum samples after 15, 30, 45 and 60 days of storage at ambient temperature (15–35°C).
- Methods : Ultra-high-performance liquid chromatography–tandem mass spectrometry was applied.
- Results : Quantitative analyses were performed with a total chromatographic run time of 1.5 min by matrix-matched calibration, and the analytical curve was linear over the range of 1–1700 µg L−1 with a correlation coefficient of 0.9998. The limits of detection (LOD) and quantification (LOQ) were 0.3 and 1.0 µg L−1, respectively. Intra- and inter-assay precisions, expressed in terms of relative standard deviation, ranged from 0.3% and 2.2%, respectively, and recoveries in concentration levels of 1 and 5 µg L−1 were 103.9% and 101.2%, respectively. The proposed analytical method was successfully applied to determine the L-AA content in eight commercial vitamin C serum samples. The stability of the target analyte in samples stored at ambient temperature (15–35°C) was evaluated throughout 60 days with a 15-day interval between analyses. At 0 days, L-AA content in samples ranged from 1.05 to 169.91 mg L−1, which decreases over time.
- Conclusion : The proposed method could be powerful in routine analyses to ensure the quantification of L-AA in vitamin C serums since it proved to be a simple, reliable, fast, precise, accurate and sensitive analytical method.Note de contenu : - MATERIALS AND METHODS : Standards and reagents - Ultra-high-
performance liquid chromatography conditions - Sample collection - Preparation of vitamin C samples - Method validation - Assay of commercial vitamin C serum samples - Statistical analysis
- RESULTS AND DISCUSSION : Method validation - Assay of commercial vitamin C serum samples
- Table 1 : Vitamin C serum samples from the Brazilian market with their respective prices for bottle containers of 30 ml
- Table 2 : Analytical curve parameters, the limit of detection, the limit of quantification and the matrix effect for L-AA from vitamin C serum samples
- Table 3 : Recovery, and intra-and inter-day precisions of the proposed method for determination of L-AA in vitamin C serum samples
- Table 4 : Analytical performance of chromatographic methods used for the L-ascorbic acid determination in the different sample matrices
- Table 5 : UHPLC-MS/MS determination of L-AA in vitamin C serum samplesDOI : https://doi.org/10.1111/ics.12762 En ligne : https://drive.google.com/file/d/1ovO5r2Gs6dBBuRlrdqUldRgYeeD9QKfW/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37265
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 131-141[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Sensitive skin : Active ingredients on the spotlight / Marta S. Ferreira in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 1 (02/2022)
[article]
Titre : Sensitive skin : Active ingredients on the spotlight Type de document : document électronique Auteurs : Marta S. Ferreira, Auteur ; José M. Sousa Lobo, Auteur ; Isabel F. Almeida, Auteur Année de publication : 2022 Article en page(s) : p. 56-73 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Allergies
Biomolécules actives
Cosmétiques
Dermo-cosmétologie
Justification de l'allégation
Peau -- Inflammation
Peau -- Physiologie
Peau -- Soins et hygiène
Sensibilité cutanéeIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Sensitive skin is characterized by self-reported sensory perceptions in response to stimuli that should not provoke unpleasant sensations. Cosmetic products for sensitive skin are designed to minimize these symptoms. This study aimed to unveil the most used active ingredients for sensitive skin in facial care products from the pharmacy and parapharmacy channel.
- Methods : A pool of products from the pharmacy and parapharmacy channel whose label included the expressions 'sensitive skin', 'reactive skin' or 'intolerant skin' were analysed. The active ingredients were identified from product compositions and ranked in descending order of occurrence. The scientific evidence regarding the mechanism of action and efficacy of each ingredient was also compiled.
- Results : Eighty-eight products from 19 multinational brands were included. Niacinamide leads the top, followed by Avena sativa, allantoin, glycyrrhetinic acid and derivatives and Laminaria ochroleuca. Ingredients that can reduce skin inflammation and act on the skin barrier were used in more than half of the products analysed. The clinical studies regarding the active ingredients used in these products remain sparse and lack methodological quality. Among the top ingredients, niacinamide, panthenol and acetyl dipeptide-1 cetyl ester were the only ones studied on volunteers having sensitive skin, while acetyl dipeptide-1 cetyl ester and palmitoyl tripeptide-8 were designed to act on the molecular targets involved in this condition.
- Conclusion : This study reveals the most used active ingredients in cosmetic products for sensitive skin, as well as the scientific evidence supporting their efficacy and the mechanisms of action. This insight is meaningful for dermatologists and other health professionals to provide customized advice based on the symptomatology of individuals with sensitive skin, and for the formulation of cosmetic products and design of new active ingredients.Note de contenu : - METHODS : Data collection - Data analysis - Ingredient use and combinations - Top ingredients for sensitive skin - Scientific evidence of active ingredients for sensitive skin - Mechanisms of action
- RESULTS AND DISCUSSION : Ingredient use and combinations - Top ingredients for sensitive skin - Scientific evidence of active ingredients for sensitive skin - Mechanisms of action
- Table 1 : Active ingredients found at INCI lists from analysed products for sensitive skin and their relative usage
- Table 2 : Summary of the top ingredients used for sensitive skinDOI : https://doi.org/10.1111/ics.12754 En ligne : https://drive.google.com/file/d/1pXO_8nSog6e-XzSdmHiEgsVN2oDohzTp/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37266
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 1 (02/2022) . - p. 56-73[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Exemplaires
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aucun exemplaire |