Stratum corneum barrier integrity controls skin homeostasis / Walter P. Smith in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 21, N° 2 (04/1999)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 21, N° 2 (04/1999) . - p. 99-106 Titre : Stratum corneum barrier integrity controls skin homeostasis Type de document : texte imprimé Auteurs : Walter P. Smith, Auteur Année de publication : 1999 Article en page(s) : p. 99-106 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Lactique, Acide L'acide lactique est un acide organique qui joue un rôle dans divers processus biochimiques. Un lactate est un sel de cet acide. Contrairement à ce que peut laisser penser son nom, l'acide lactique n'est pas présent uniquement dans le lait, mais également dans le vin, certains fruits et légumes, et dans les muscles. L'acide lactique est un acide alpha hydroxylé, sa formule chimique est C3H6O3 et sa structure se reflète dans son nom systématique, l'acide 2-hydroxypropanoïque. Perte insensible en eau Rétinoïdes Vieillissement cutané Index. décimale : 668.5 Parfums et cosmétiques Résumé : The stratum corneum water barrier controls structural and functional properties of both the epidermis and the dermis. Treatments which chronically disrupt the stratum corneum water barrier can induce changes similar to those seen with ’anti-aging’ treatments such as (-Hydroxy acids (AHAs) and Retin Aâ„¢. Barrier disruption via daily tape stripping increases epidermal and dermal thickness, superficial and integral skin firmness, and improves skin surface texture. Modest or transitory disruption did not produce such effects. Similar results were observed with topical application of AHAs, retinoids or mild irritants after about 4-6 weeks provided such treatments resulted in prolonged elevation in TEWL (trans-epidermal water loss). Treatments that did not chronically elevate TEWL could also produce positive cosmetic effects, but such effects were in general restricted to the skin surface or epidermis. Irritation, which was observed with some treatments, was not solely responsible for the positive effects observed. DOI : 10.1046/j.1467-2494.1999.196562.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1999.196562.x Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26495 [article]

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The effects of topical L(+) lactic acid and ascorbic acid on skin whitening / Walter P. Smith in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 21, N° 1 (02/1999)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 21, N° 1 (02/1999) . - p. 33–40 Titre : The effects of topical L(+) lactic acid and ascorbic acid on skin whitening Type de document : texte imprimé Auteurs : Walter P. Smith, Auteur Année de publication : 1999 Article en page(s) : p. 33–40 Note générale : Bibliogr. Langues : Anglais (eng) Résumé : Subjects with medium to dark skin and many exhibiting facial age spots or discolorations participated in this twelve week study to evaluate the skin whitening ability of lactic and ascorbic acid. Using clinical and biophysical test methods we observed prolonged treatment with 8.8% L(+) lactic acid resulted in no significant effects on skin pigmentation. However treatment with L(+) lactic acid supplemented with ascorbic acid (1%) did produce a whitening effect which becomes apparent after three months. These effects were demonstrated clinically by the test panelists, and trained clinicians, and with objective instrumental methods. We observed a general skin lightening and did see a modest preferential lightening of age spots with the combination of acids. DOI : 10.1046/j.1467-2494.1999.196561.x En ligne : https://onlinelibrary.wiley.com/doi/10.1046/j.1467-2494.1999.196561.x Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26502 [article]

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