Also known as: Alpha-Hydroxyphenylacetic Acid
Mandelic acid is an AHA derived from bitter almonds with the largest molecular weight of the commonly used AHAs. Its large size means slower skin penetration and a gentler exfoliation profile, making it suitable for sensitive and darker skin tones where other AHAs may cause post-inflammatory hyperpigmentation. It also has antibacterial properties beneficial for acne-prone skin.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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