Mandelic acid is an aromatic alpha hydroxy acid originally sourced from bitter almonds and now mostly made synthetically. It's used for gentle surface exfoliation, boosting skin radiance and refining the look of uneven tone and texture at a slower penetration rate.
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Mandelic Acid a Good Ingredient?
Its larger molecular size gives slower but effective AHA exfoliation for texture and tone, with typically better tolerability than glycolic acid, which earns it Good. Benefits are pH- and concentration-dependent, and overuse can still cause irritation.
What it does
Skin Benefits
Helps clear congested pores and smooth rough, uneven patches for a more refined look, and can gradually lessen the appearance of post-blemish marks with typically less sting than stronger acids.
Where you'll find it
Uses in Skincare & Cosmetics
Found in leave-on serums, treatment pads, and nighttime exfoliating toners. Also used in low-foaming cleansers and occasional at-home peel products.
Before you use it
Safety
Can sting, disrupt the skin barrier, and increase sun sensitivity; daily sunscreen is advisable when using AHAs. Start slowly and avoid layering with other strong actives if your skin is reactive.