One potential downside is that alpha-hydroxy acids "thin out the epidermis, making it a little more sensitive to being sunburned," but not nearly as sensitive as it is to Retin-A, he said.
一个潜在的不利因素是阿尔法羟基酸“使表皮变薄，更加敏感从而易被阳光灼伤，”但它远不及Retin - A带来的敏感程度，他说。
Add alpha hydroxy acids to your routine, and use a mask with algae to increase microcirculation and even out your skin.
平常添加一点阿尔法羟基酸，使用海藻面膜增强你皮肤的微循环和均匀度。
An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids.
一类弱酸性有机合成物，分子中含有一个或更多羟基。
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