Tartaric Acid
Alpha-hydroxy acid from grapes and other fruits. The largest AHA molecule after mandelic acid – penetrates slowly and irritates less than glycolic. Used as a mild exfoliant and pH adjuster. More often found in combination with other acids than as a sole active.
Evidence by route
Topical application
Clinical studies of isolated tartaric acid are essentially absent. In multi-acid formulas it complements other AHAs. Not used clinically as a sole exfoliant.
- Tang SC, Yang JH. Molecules. 2018;23(4):863. PMID 23040863
How to read tiers A–F
- CWeak evidence. In vitro data, open-label studies, or expert consensus
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Caution
- Suitable for
- Normal, Combination, Oily
- Use with caution
- Sensitive
About this ingredient
Tartaric Acid (L-tartaric acid) is a natural alpha-hydroxy acid from grapes, tamarind, bananas. After mandelic acid it is the largest molecule in the AHA class. Mechanism. Mild exfoliant: breaks corneocyte bonds in the stratum corneum and speeds desquamation. The large molecule penetrates slower than glycolic acid, so irritation is markedly lower. Also works as a pH adjuster and chelator. Where applied. Multi-acid peels, toners, gentle exfoliating products. More common in combination with other AHAs than as a sole active. In Spain – Sesderma Acglicolic, Mesoestetic Mela Peel. Evidence base. RCTs on tartaric acid are scarce. Most data are on tartaric–glycolic–lactic blends in peel formulas (15-30% at pH 3-3.5). Texture and hyperpigmentation effects show by 4-6 weeks. Safety. CIR confirmed safety up to 4% at pH ≥ 3.5 in leave-on and up to 30% in short-contact peels. Less irritating than glycolic, but transient sting is possible. Photosensitizes – daily SPF 30+ mandatory. Pregnancy and lactation – use with caution. AHAs up to 4% at pH ≥ 3.5 are allowed by AAD 2024 in pregnancy. Professional tartaric peels are not performed.
Frequently asked questions
Is Tartaric Acid safe during pregnancy?
Tartaric Acid should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
What skin types is Tartaric Acid for?
Tartaric Acid suits: normal, combination, oily. Use with caution in: sensitive.
What is Tartaric Acid and what does it do in cosmetics?
Alpha-hydroxy acid from grapes and other fruits.
What's the INCI name for Tartaric Acid?
The INCI name is Tartaric Acid. It may also appear as: L-Tartaric Acid, 2,3-Dihydroxybutanedioic Acid.
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