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Scalp application of the antioxidant piroctone olamine reduces hair shedding in an 8-week randomized, double-blind, placebo-controlled clinical study / Michael G. Davis in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° S1 (11/2021)
[article]
Titre : Scalp application of the antioxidant piroctone olamine reduces hair shedding in an 8-week randomized, double-blind, placebo-controlled clinical study Type de document : document électronique Auteurs : Michael G. Davis, Auteur ; Melissa P. Piliang, Auteur ; Wilma F. Bergfeld, Auteur ; Tamara L. Caterino, Auteur ; Brian K. Fisher, Auteur ; Jarek P. Sacha, Auteur ; Greg J. Griffin, Auteur ; Laura T. Moulton, Auteur ; Deborah J. Whittenbarger, Auteur ; Supriya Punyani, Auteur ; James R. Schwartz, Auteur Année de publication : 2021 Article en page(s) : p. 26-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alopécie
Antioxydants
Barrière cutanée
Cheveux -- Croissance
Cheveux -- Soins et hygiène
Cosmétiques
Cuir chevelu -- Soins et hygiène
Dermo-cosmétologie
Evaluation
Formulation (Génie chimique)
shampooingsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Increasing scalp hair fullness is a global unmet consumer need. An approach to decrease hair shedding by reducing scalp stratum corneum oxidation via a combination of antioxidant and barrier-enhancing technologies has been previously demonstrated. The purpose of this study was to test the effectiveness of the individual antioxidant piroctone olamine in two different product forms (shampoo or leave-on product) for activity to improve hair retention.
- Methods : Female subjects with self-perceived hair thinning participated in an 8-week, double-blind, placebo-controlled, randomized clinical study to evaluate either a piroctone olamine (PO) containing shampoo or a PO containing leave on treatment, each relative to their corresponding placebo formulation Too many periods. Results for phototrichograms, TEWL, and biomarker analysis of scalp condition for the shampoo treatments are discussed. Phototrichogram results are shared for the assessment of the leave on treatment.
- Results : Statistically significant increases in hair amount were observed by phototrichogram after use of both PO-containing products versus placebo formulations. The PO shampoo treatment also significantly decreased oxidative stress on the hair and scalp, and improved scalp condition as assessed by TEWL and scalp biomarker values.
- Conclusion : These results illustrate the effectiveness of a cosmetic antioxidant to improve scalp condition thereby improving hair retention. The observed improvements in scalp condition are consistent with previous reports with other antioxidant technologies and suggest that the hair retention effect was achieved by preventing oxidative damage to the scalp.Note de contenu : - MATERIALS AND METHODS : Study design and subjects - Study design and sample size for assessment of the shampoo treatments - Study design and sample size for assessment of the leave-on treatments - Study procedures - Statistics
- RESULTS : Total hair counts
Table 1 : Compositions of treatment formulationsDOI : https://doi.org/10.1111/ics.12737 En ligne : https://drive.google.com/file/d/1fO1cZSHgD02ug0rwQfzam1vGWqCNfkae/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36877
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° S1 (11/2021) . - p. 26-33[article]Scalp hair loss is not random across follicular units : A new insight into human hair ageing / Junyu Luo in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 4 (08/2023)
[article]
Titre : Scalp hair loss is not random across follicular units : A new insight into human hair ageing Type de document : texte imprimé Auteurs : Junyu Luo, Auteur ; Qili Qian, Auteur ; Wenxin Zheng, Auteur ; Ieva Gripkauskaite, Auteur ; Sijie Wu, Auteur ; Min Zhang, Auteur ; Jinxi Li, Auteur ; Bingfei Fu, Auteur ; Ranjit Bhogal, Auteur ; Peter Murray, Auteur ; Matthew Rowson, Auteur ; Bin Li, Auteur ; Xiangyang Xue, Auteur ; Xuelan Gu, Auteur ; Yajun Yang, Auteur ; Li Jin, Auteur ; David Andrew Gunn, Auteur ; Sijia Wang, Auteur Année de publication : 2023 Article en page(s) : p. 548-555 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Croissance
Cheveux -- Vieillissement
Dermatologie
Différences entre sexes
Modèles numériquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objectives : Scalp hair has the greatest number of hairs (typically 1–5) per follicular unit but is also the most susceptible body site to hair loss with age. Hence, we set-out to determine the degree to which scalp hair parameters change with age in women and men, any sex differences thereof and whether hair loss is random across follicular units.
- Methods : A retrospective cross-sectional study of 200 Chinese men and 200 Chinese women (30–69 years). Image analysis and manual counting methods were used to measure occipital located hair parameters from 6 × 8 mm shaved scalp photographs and plucked hair microscopy images.
- Results : Of the five hair parameters, the number of hairs per follicular unit had the greatest (negative) correlation with age in both men and women. Men had a greater number of hairs and follicular units than women on average but had a greater decrease in the number of hairs per follicular unit with age, particularly for the loss of multi-hair (3+) follicular units. The loss of hairs with age was significantly different to that expected by a random loss of hairs across follicular units and better described by a model of increased hair loss risk the greater number of hairs per follicular unit.
- Conclusions : We have found evidence of hair loss preferentially occurring in multi-hair follicular units, which was more pronounced in men. These data suggest that part of the reason scalp hair is more susceptible to hair loss than on other body sites is due to the greater presence of multi-hair follicular units on the scalp.Note de contenu : - MATERIALS AND METHODS : Subject selection - Measurement of hair parameters - Data analyses - Modelling loss of hair fibres
- RESULTS : Hair parameters and sex differences - Hair parameter changes with age - Hairs per follicle unit and their change with age
- Table 1 : Hair parameter characteristics by sexDOI : https://doi.org/10.1111/ics.12851 En ligne : https://drive.google.com/file/d/1MEvrUCIkxUsepl_tUSKwAAZPrRfuR7dB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39885
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 4 (08/2023) . - p. 548-555[article]Silab in EXPRESSION COSMETIQUE, N° 45 (05-06/2017)
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Titre : Silab : recherche de pointe, naturalité des actifs Type de document : texte imprimé Année de publication : 2017 Article en page(s) : p. 124-125 Langues : Multilingue (mul) Catégories : Antiâge:Antirides
Biomolécules actives
Cheveux -- Croissance
Cheveux -- Soins et hygiène
Peau -- Soins et hygiène
Produits capillairesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Deux innovations majeures marquent l'année 2017 pour Silab, l'une en soin sur un concept original, "le bien vieillir", l'autre en capillaire avec un actif anti-chute. L'une est issue de la rose bulgare selon un procédé non dénaturant, l'autre, 100% biotechnologique, est isolée de la fleur d'azalée. Note de contenu : - Rendre aux fibroblastes leur phénotype de cellules bien vieillissante
- Développement de modèles mimant l'alopécie androgénétique
- Des actifs naturels issus de procédés respectant l'environnementPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28715
in EXPRESSION COSMETIQUE > N° 45 (05-06/2017) . - p. 124-125[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19031 - Périodique Bibliothèque principale Documentaires Disponible Taking a regenerative approach to hair growth / Masakazu Hashimoto in PERSONAL CARE EUROPE, Vol. 14, N° 3 (06/2020)
[article]
Titre : Taking a regenerative approach to hair growth Type de document : texte imprimé Auteurs : Masakazu Hashimoto, Auteur ; Ryo Nishiyama, Auteur ; Arunasiri Iddamalgoda, Auteur ; Ichimaru Pharcos, Auteur Année de publication : 2020 Article en page(s) : p. 55-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cheveux -- Croissance
Cheveux -- Soins et hygiène
Etudes cliniques
Extraits de plantes:Extraits (pharmacie)
Follicule pileux
Ingrédients cosmétiques
Produits capillaires
Régénération (biologie)Index. décimale : 668.5 Parfums et cosmétiques Résumé : Hair loss is an issue that relates to both men and women of all ages. Recent studies for hair growth are being conducted on dermal papilla and there have been several pathways that have been identified such as the Wnt signalling pathway.
RSPO1 is one of the recent novel proteins required for organ development, and is secreted from dermal papilla cells in the hair follicle. It has two functions - a promoter role and a protector role in the hair cycle. Nasturtium officinale Leaf/Stem Extract, a novel hair growth ingredient increases RSPO1 secretion from the derma papilla, and binds to the outer root sheath to promote hair follicle growth, and also neutralises the hair loss factor Dickkopf-related protein 1 (DKK1) to protect hair growth. The result of in vitro, ex vivo, and human clinical trial confirmed the efficacy of the special processed Nasturtium officinaleLeaf/Stem Extract (commercially known as ‘Burgeon-Up’) to effectively promote hair growth through RSPO1 enhancement.Note de contenu : - Focusing on RSPO1
- Enhancing RSPO1
- Suppression of DKK1 secretion
- Hair follicle elongation ex vivo
- Human clinical trial
- Fig. 1 : RSPOA action site in human hair
- Fig. 2 : RSPO1 enhancing Wnt activity
- Fig. 3 : Nasturtium officinale Leaf/Stem Extract promoting RSPO1 secretion
- Fig. 4 : Nasturtium officinale Leaf/Stem Extract promoting DKK1 secretion
- Fig. 5 : Elongation of human hair follicle (ex vivo) by Nasturtium officinale Leaf/Stem Extract
- Fig. 6 : Hair parameters of the clinical study volunteers
- Fig. 7 : Phototrichogram analysis of an active group volunteer at 0 month and 3 months
- Fig. 8 : Visual change of hair volume from a 51 year old volunteer from 0 month, 3 months and 6 monthsEn ligne : https://drive.google.com/file/d/1TLk_VI8x2MFgIgib_wR9NXqI_0SPOQBx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34280
in PERSONAL CARE EUROPE > Vol. 14, N° 3 (06/2020) . - p. 55-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21749 - Périodique Bibliothèque principale Documentaires Disponible The formulation and in vitro evaluation of WS Biotin, a novel encapsulated form of D-Biotin with improved water solubility for hair and skin treatment applications / Shaher Duchi in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 46, N° 1 (02/2024)
[article]
Titre : The formulation and in vitro evaluation of WS Biotin, a novel encapsulated form of D-Biotin with improved water solubility for hair and skin treatment applications Type de document : texte imprimé Auteurs : Shaher Duchi, Auteur ; Paloma Rebollo Torregrosa, Auteur ; Akram Hajuj, Auteur ; Danit Molho, Auteur ; Rawya Shkoor, Auteur ; Nadeen Abo Saada, Auteur ; David González Fernández, Auteur ; Danny Goldstein, Auteur ; Alejandro Pérez-Fernández, Auteur Année de publication : 2024 Article en page(s) : p. 119-129 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellules -- Cultures et milieux de culture
Cheveux -- Croissance
Cheveux -- Soins et hygiène
Cosmétiques
Dermo-cosmétologie
Formulation (Génie chimique)
Génétique
kératineLa kératine est une protéine, synthétisée et utilisée par de nombreux êtres vivants comme élément de structure, et également l'exemple-type de protéine fibreuse.
La kératine est insoluble, et peut être retrouvée sur l'épiderme de certains animaux, notamment les mammifères, ce qui leur garantit une peau imperméable. Parfois, lors d'une friction trop importante, la kératine se développe à la surface de la peau formant une callosité. Les cellules qui produisent la kératine meurent et sont remplacées continuellement. Les morceaux de kératine qui restent emprisonnés dans les cheveux sont couramment appelés des pellicules.
La molécule de kératine est hélicoïdale et fibreuse, elle s'enroule autour d'autres molécules de kératine pour former des filaments intermédiaires. Ces protéines contiennent un haut taux d'acides aminés à base de soufre, principalement la cystéine, qui forment un pont disulfure entre les molécules, conférant sa rigidité à l'ensemble. La chevelure humaine est constituée à 14 % de cystéine.
Il y a deux principales formes de kératines : l'alpha-kératine, ou α-keratin, présente chez les mammifères notamment, dont l'humain, et la bêta-kératine, ou β-keratin, que l'on retrouve chez les reptiles et les oiseaux. Ces deux types de kératines ne présentent clairement pas d'homologie de séquence.
Chez l'être humain, la kératine est fabriquée par les kératinocytes, cellules se trouvant dans la couche profonde de l'épiderme. Les kératinocytes absorbent la mélanine (pigment fabriqué par les mélanocytes), se colorent et ainsi cette pigmentation de l'épiderme permet de protéger les kératinocytes des rayons ultraviolets du Soleil.
Mélanine
Peau -- Soins et hygièneIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : To develop and evaluate the efficacy of WS Biotin, a novel water-soluble form of D-Biotin, for cosmetic use.
- Methods : A new encapsulated form of D-Biotin was developed with the purpose of improving the water solubility of biotin. This novel form of encapsulated biotin was characterized by its physicochemical properties: particle size, D-Biotin content and solubility in water. Also, proliferation and gene expression in vitro tests in cell culture were performed to evaluate its effectiveness in promoting hair growth, an ELISA test was conducted for hair keratinization and skin lightening property was tested by analysing the intracellular melanin content.
- Results : The developed WS Biotin microcapsules exhibit a particle size range of 2–30 μm with D-Biotin content of ~50% (w/w). The water solubility of WS Biotin was found to be 20-fold greater than free biotin. The obtained in vitro results indicated that WS Biotin enhances the expression of hair-related keratins in hair follicle keratinocytes, as well as the expression of hair growth-promoting genes in dermal papilla cells. Moreover, the melanin content in UVA-exposed epidermal melanocytes was reduced upon exposure to WS Biotin.
- Conclusion : In this work, a novel form of encapsulated biotin, WS Biotin, was developed in order to improve the water solubility of free biotin and was found to be effective for cosmetic use in both hair and skin applications.Note de contenu : - MATERIALS AND METHODS : Preparation of WS Biotin - Determination of D-Biotin content, entrapment efficacy and yield - Size and morphological characterization - Solubility test - Cell culture - Cell viability - Cell proliferation - Quantification of hair keratins - Gene expression of hair growth-related growth factors - Melanin quantification
- RESULTS : Determination of D-Biotin content, entrapment efficacy and yield - WS Biotin powder characterization - WS Biotin water solubility test - Characterization of the cytotoxicity profile of WS Biotin in different in vitro models - Influence of biotin WS in the proliferation of hair follicle keratinocytes - WS Biotin promotes the expression of hair shaft keratins - Modulation of hair growth-related genes by WS Biotin - Whitening potential of WS BiotinDOI : https://doi.org/10.1111/ics.12914 En ligne : https://drive.google.com/file/d/1TmKumJh5Vc7WU_OMGRPe3E4Dt9eZdDz4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40584
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 46, N° 1 (02/2024) . - p. 119-129[article]The human melanocyte and melanoblast populations per unit area of epidermis in the rete ridge are greater than in the inter-rete ridge / Tomohisa Hirobe in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 2 (04/2021)
PermalinkThe impact of oxidative stress on hair / R. M. Trüeb in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 37, suppl. 2 (12/2015)
PermalinkThe many functions of azelaic acid in cosmetics / Lisanne Brouns in GLOBAL PERSONAL CARE, Vol. 24, N° 9 (10/2023)
PermalinkToical niacinamide does not stimulate hair growth based on the existing body of evidence / John. E Oblong in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 2 (04/2020)
PermalinkTopical adenosine increases thick hair ratio in Japanese men with androgenetic alopecia / Yasushi Watanabe in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 37, N° 6 (12/2015)
PermalinkTowards a body hair atlas of women of caucasian ethnicity / Dorothea Schweiger in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 4 (08/2016)
PermalinkTransepidermal UV radiation of scalp skin ex vivo induces hair follicle damage that is alleviated by the topical treatment with caffeine / Jennifer Gherardini in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 41, N° 2 (04/2019)
PermalinkWhat is a caucasian 'fine' hair ? Comparing instrumental measurements, self-perceptions and assessments from hair experts / S. Bouabbache in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 38, N° 6 (12/2016)
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