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Promotion of glyoxylic acid penetration into human hair by glycolic acid / Makoto Uyama in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 2 (03-04/2023)
[article]
Titre : Promotion of glyoxylic acid penetration into human hair by glycolic acid Type de document : document électronique Auteurs : Makoto Uyama, Auteur ; Shinya Okabe, Auteur ; Takumi Kurashima, Auteur ; Rie Kurinobu, Auteur ; Miwa Takechi, Auteur ; Ryo Yoshiba, Auteur ; Rina Miyoshi, Auteur ; Seigi Noda, Auteur ; Mio Kaneko, Auteur ; Yuka Ikemoto, Auteur ; Atsushi Takahara, Auteur ; Yuji Higaki, Auteur ; Tetsuya Hama, Auteur Année de publication : 2023 Article en page(s) : p. 246-254 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide glycolique L'acide glycolique (ou acide hydroxyacétique) est le plus petit des acides α-hydroxylés (AHA).
L'acide glycolique est obtenu à partir d'extrait de canne à sucre, de betterave ou de raisin.
Grâce à son excellente capacité à pénétrer la peau, l'acide glycolique est très utilisé dans les produits de soins pour la peau, le plus souvent dans les peelings.
Toxicité : L'acide glycolique peut être très irritant selon les niveaux de pH5. Il peut être irritant pour la peau, les yeux ou les voies respiratoires6. Comme l'éthylène glycol, il est métabolisé à l'acide oxalique, ce qui peut le rendre dangereux s'il est ingéré.
Cheveux -- Lissage
Cheveux -- Soins et hygiène
Chromatographie en phase liquide
Cosmétiques
Essais (technologie)
Fourier, Spectroscopie infrarouge à transformée de
Pénétration (physique)
Permanente (coiffure)
Spectrométrie de masseIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Glyoxylic acid (GA) is widely used as a straight perming agent for hair care products, however, advanced GA penetration-enhancing agents are desired due to the peculiar odour and hair colour fading caused by the continuous use of GA products. Hence, it is important to develop a penetration-enhancing agent that helps minimize the GA concentration. We have found that the combined use of GA and glycolic acid (GCA) has a strong hair straightening effect.
- Methods : Straightening hair test was carried out to the evaluation of the effect of additives. Liquid chromatography-mass spectrometry (LC/MS) was performed to quantify the GA penetration amount into human hair. Attenuated total reflection (ATR) Fourier transform-infrared spectroscopy (FT-IR) and FT-IR microscope were implemented to estimate the localization of GA in the hair.
- Results : Straightening hair tests indicated that the hair straightening effect by GA was enhanced by the presence of GCA. LC/MS results showed that the addition of GCA enhanced the amount of GA that penetrated human hair by about four times. ATR FT-IR and FT-IR microscope measurements indicated that GA was localized more in the innermost region of hair (medulla) than the cortex and cuticle. The GA accumulated in the medulla disappeared after a hair straightener treatment at 180°C due to the chemical reaction.
- Conclusions : The GA penetration-enhancing effect of GCA is worth investigating to reduce the GA concentration in products for more comfortable use.Note de contenu : - MATERIALS AND METHODS : Materials - Sample preparation - Straightening hair test - LC/MS - ATR FT-IR - FT-IR microscope
- RESULTS AND DISCUSSION : Straightening hair test - Penetration amount of GA - ATR FT-IR experiments - FT-IR microscope experimentsDOI : https://doi.org/10.1111/ics.12838 En ligne : https://drive.google.com/file/d/1qoOnbZW6hICxlV8z8jHxV6_Y9HA3hEAG/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39174
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 2 (03-04/2023) . - p. 246-254[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Resolving the conflict of a simultaneously highly moisturizing and occlusive emulsion film / Yuji Sakai in IFSCC MAGAZINE, Vol. 9, N° 1 (01-02-03/2006)
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Titre : Resolving the conflict of a simultaneously highly moisturizing and occlusive emulsion film Type de document : texte imprimé Auteurs : Yuji Sakai, Auteur ; Masashi Suzuki, Auteur ; Yasuhiro Ohara, Auteur ; Shinya Okabe, Auteur Année de publication : 2006 Article en page(s) : p. 23-28 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Film émulsion' 'Stratum corneum' 'Surfactant polyglycérine-type ' 'Fonction hydratante' occlusive' 'Microscope laser' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Two basic functions of emulsion-based cosmetic products are moisturization and occlusion, which are markedly affected by the ratio of hydrophilic to lipophilic parts in the emulsions. However, due to their conflicting requirements, it is difficult to simultaneously improve both functions. Therefore, we developed new emulsion that has simultaneously higher moisturizing and occlusive functions than those of polyoxyethelene-type emulsions, by using polyglycerin-type surfactants, acetyl alcohol, polyglycerin-13-polyoxybutylene-14-stearyl ether and the D-phase emulsification method, because of dispersing a large quantity of water into the lipophilic part of the applied emulsion film and of strengthening the hydrophilic part of the emulsion film. We confirmed through microscopic study with a laser microscope that in polyoxyethelene-type emulsions, droplets disappear quickly after the film is formed and dried, whereas in our experimental emulsions, the droplets’ shape is evenly retained. Furthermore, after 1 month of continuous use, stratum corneum removal and corneocyte arrangement also improved significantly. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10522
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