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Exfoliants & acne actives

Mandelic acid

Also listed as Phenylglycolic acid and AHA (alpha hydroxy acid)

Emerging evidence 5–10% leave-on; higher strengths in professional peels

Mandelic acid is a large-molecule alpha hydroxy acid originally derived from bitter almonds. It exfoliates more slowly and gently than glycolic acid, which makes it popular for sensitive and breakout-prone skin.

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What it does

The short version.

Mandelic acid loosens dead skin cells like other AHAs, but its larger size means it penetrates more slowly and evenly, generally producing less stinging. It is somewhat oil-soluble and has antibacterial properties, so it is often marketed for congested skin and post-blemish marks as well as dull texture.

Emerging evidence

Evidence comes mostly from small studies of professional peels (for example 45% mandelic versus 30% salicylic peels for acne) and short cosmetic studies; data on low-strength home products are limited.

Reach for it for

SmoothingResurfacingClogged poresAcne marksDullnessHyperpigmentation

Usually a good fit for

Sensitive skinAcne-prone skinOily skinCombination skin

How to use it

Getting it right.

Apply to clean, dry skin a few evenings a week before moisturizer, increasing gradually if tolerated. Wear sunscreen daily.

Layering

Friends & frenemies.

Pairs well with

NiacinamideHyaluronic acidCeramidesAzelaic acidGlycerin

Go slow with

RetinolRetinalAdapaleneGlycolic acidSalicylic acidBenzoyl peroxide

Not forbidden — just easier to over-do. Alternate nights or separate morning and evening.

Before you start

Can raise sun sensitivity: the FDA advises daily sunscreen while using AHA products and for a week after stopping. Gentler does not mean irritation-free: overuse can still cause redness and peeling. Avoid broken or sunburned skin.

References

  1. 1Comparative study of efficacy and safety of 45% mandelic acid versus 30% salicylic acid peels in mild-to-moderate acne vulgaris — Journal of Cosmetic Dermatology (2020), via PubMed
  2. 2Effects of Topical Mandelic Acid Treatment on Facial Skin Viscoelasticity — Facial Plastic Surgery (2018), via PubMed
  3. 3Alpha Hydroxy Acids — U.S. Food and Drug Administration

Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.

No mandelic acid products reviewed yet.

We add products every week. The guide above still stands — and Beauty Match can find what suits you today.

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