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7 Best Azelaic Acid Serums Allure Editors Swear by for Clearer Skin
Treating acne (and the discoloration it leaves behind) is no easy task, but the best azelaic acid serums can speed up the ...
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The best ingredients to treat hyperpigmentation and brighten your complexion, according to dermatologists
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.