What Exactly Is Glycolic Acid?
By THÉRÈSE MARGOLIS You see it listed on a slew of skincare products, from night creams to facial masks, face cleansers to serums. And dermatologists and beauty experts swear by it, touting it as God’s gift to aging skin, a multitask cure-all for everything from wrinkles and sagging skin to age spots and acne. But for all the spiel about
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