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What are alpha hydroxy acids? AHAs are water-soluble acids categorized as chemical exfoliants. This means that they use chemicals — specifically acids or enzymes — to gently slough away dead skin ...
Medically reviewed by Deeptej Singh, MD Key Takeaways Lactic acid is an alpha hydroxy acid that is used on the skin to remove dead skin cells and help fade dark spots and soften fine lines.It comes in ...