Treating acne (and the discoloration it leaves behind) is no easy task, but the best azelaic acid serums can speed up the ...
Topical agents for melasma include phenols (hydroquinone), retinoids (tretinoin), alpha-hydroxy acids (glycolic acid), salicylic acid, azelaic acid ... of chemical peels to a tretinoin ...
Azelaic Acid How to use ... 6. Mandelic Acid What it does: Mandelic acid is an alpha-hydroxy acid (AHA) used in chemical peels, but it can also be found in over-the-counter cosmetics.
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