Skin Sciences第 55 / 100 题
Why does an esthetician avoid stripping the skin with a very high-pH cleanser?
a.It disrupts the acid mantle, whose slightly acidic pH helps limit microbial growth and reduce transepidermal water loss
b.It permanently removes the stratum basale
c.It causes melanocytes to stop functioning
d.It thickens the dermis and creates wrinkles
解析
The acid mantle is a thin film of sebum and perspiration with a mildly acidic pH that discourages microbial growth and helps hold moisture in the skin, so highly alkaline cleansers leave skin tight, reactive, and prone to breakouts. Cleansers act on the surface and do not reach the basal layer or the dermis, and they do not shut down melanocytes.
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