Comparative study of the hydration of the stratum corneum between four ethnic groups: influence of age

摘要: Background Several recent overviews have reported that significant work remains to be performed understand and quantify the ethnic differences in skin properties. In this way, we carried out a set of vivo biophysical experiments on American women from different populations living same environment. Inter- intraethnic micro relief results were already published, hydration are now here. Methods The water content was evaluated taking advantage new capacitance imaging technique which allows study stratum corneum without suffering influence micro-relief hair measurement. Three hundred eleven four groups enrolled study. investigation during summer season 2004 major relatively distinct Chicago, is say: African American, Chinese, Caucasian Mexican. investigated dorsal ventral forearm sites as function ethnicity age. Results Skin dryness higher sun exposed for lighter tones, such Chinese women, than primarily sun; while, no seen either site Mexican whose darker. does not change younger group forearm. With age, however, two other groups, with percentage increase women. Conclusions This has revealed according age effects influenced by ethnicity, suggesting anatomical or physiological property skin. also pointed SkinChip® seems convenient fast way investigate both previously published large number subjects, will very useful improve our knowledge about people helping develop specific products customized all these populations.