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Alpha hydroxy acids (AHAs) are a popular set of chemical exfoliators often used in skincare. They are also quite popular among regular users of chemical exfoliation to gently slough off dead skin cells and reveal newer skin underneath. And even though they are quite effective, beauty enthusiasts are always on the lookout for more alternatives and PHAs, aka polyhydroxy acids, are what they have their eyes set on. Leading the charge of the PHA boom is lactobionic acid — the gentler cousin of AHAs that promises proper exfoliation without any irritation!
