BHA, or beta hydroxy acid, is a form of salicylic acid and is used in some topical exfoliants to reverse signs of aging.
或者beta hydroxy acid,是水杨酸的一种,被用在一些局部去角质产品中来扭转老化迹象。
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There’s no question that using exfoliants, such as scrubs that contain sugar or ground nut shells to slough off dead surface layers, can indeed reveal softer, healthier-looking skin.