Classification of sensitive skin and development of a treatment system appropriate for each group / Tomohiro Yokota in IFSCC MAGAZINE, Vol. 6, N° 4 (10-11-12/2003)

[article]  inIFSCC MAGAZINE > Vol. 6, N° 4 (10-11-12/2003) . - p. 303-307 Titre : Classification of sensitive skin and development of a treatment system appropriate for each group Type de document : texte imprimé Auteurs : Tomohiro Yokota, Auteur ; Masayuki Matsumoto, Auteur ; Takeshi Sakamaki, Auteur ; Rie Hikima, Auteur ; Shoji Hayashi, Auteur ; Mayumi Yanagisawa, Auteur ; Hirofumi Kuwahara, Auteur ; Shyunsuke Yamazaki, Auteur ; Tomoyasu Ogawa, Auteur ; Motoi Hayase, Auteur Année de publication : 2003 Article en page(s) : p. 303-307 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Fonction  barrière'  Classification  'Etat  d'hydratation'  Hypersensibilité  'Peau  sensible'  'Sensibilité  aux  stimuli  électriques'  'Points  cuisants'  'Densité  des  papilles  cutanées'  'Modèle  de  desquamation'  'Facteur  croissance  du  nerf'  'Perte  d'eau  transepidermique'  'Épaisseur  l'épiderme' Index. décimale : 668.5 Parfums et cosmétiques Résumé : In order to find an effective approach to improve sensitive skin, it is important to know the detailed mechanism of sensitive skin. In this study, detailed characteristics of sensitive skin were investigated using non-invasive methods. Senssitive skin was classified into three different types based on their particular characteristics. Type I was defined as the low barrier function group. Type II was defined as the inflammation group with normal barrier function and inflammatory changes. Type III was specified as the pseudo healthy group in terms of normal barrier function and no inflammatory change. In all types, a high content of nerve growth factor was observed in the stratum corneum. Both in Type II and III, the sensitivity to electric stimuli was high. Moreover, a treatment system appropriate for type I was examined. Topical application of cosmetics containing niacinamide significantly improved Type I sensitive skin, while there was no effect observed in either Type II or III showing normal barrier function. These data suggest that sensitive skin could be classified into three groups each with particular characteristics and an appropriate approach should be taken to improve sensitive skin with consideration given to the underlying mechanism of skin sensitivity. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10553 [article]

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Eugenyl glucoside as an active ingredient for hair re-growth agent : release of eugenol from eugenyl glucoside on human scalp and 5alpha-reductase inhibitory effect / Kazuto Hamada in IFSCC MAGAZINE, Vol. 4, N° 2 (04-05-06/2001)

[article]  inIFSCC MAGAZINE > Vol. 4, N° 2 (04-05-06/2001) . - p. 83-87 Titre : Eugenyl glucoside as an active ingredient for hair re-growth agent : release of eugenol from eugenyl glucoside on human scalp and 5alpha-reductase inhibitory effect Type de document : texte imprimé Auteurs : Kazuto Hamada, Auteur ; Uchiwa Hideyo, Auteur ; Takeshi Ikemoto, Auteur ; Hiroyuki Nishio, Auteur ; Hirofumi Kuwahara, Auteur ; Yasushi Watanabe, Auteur Année de publication : 2001 Article en page(s) : p. 83-87 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Eugenyl  glucoside'  Eugenol  Clove  'Release  control'  Anti-androgen  '5alpha-reductase  inhibitor'  'Androgenetic  alopecia'  'Hair  re-growth' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Clove bud oil is an important natural essential oil known to be effective in activating hair growth as well as blackening gray hair though its mechanisms remain clear. The main component of this oil is eugenol, which is used as a herbal remedy for a wide variety of diseases. However, eugenol typically has a spicy odor and is effective for a limited time only, due to its volatility. We investigate the fact that unopened clove buds contain odorless eugenyl glucoside as one of the precursors of eugenol and examined the effect of eugenyl glucoside in vitro, as well as its effect on hair re-growth in vivo. Eugenol generated from eugenyl glucoside showed a much stronger 5α-reductase inhibitory effect than other related compounds and plant extracts. Further, the release of eugenol from eugenyl glucoside on human scalp showed an increase that began from just after application, and remained sustained after 24 hours. In a clinical pilot study, the efficacy rate of a hair growth agent containing 0.5% eugenyl glucoside was 83.3%. No adverse reactions were observed in any patient throughout the study period. Moreover, a 0.5% dose of eugenyl glucoside showed a mitigative effect against alcohol. From our results, we concluded that eugenyl glucoside was a useful active ingredient that showed potential as an agent for hair re-growth. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10730 [article]

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