Malic Acid
An alpha-hydroxy acid (AHA) found in apples and other fruits. Molecularly larger than glycolic acid, it penetrates more gently. Used in formulations as a mild exfoliant and pH adjuster. Popular in 'fruit acid' peels. Rarely used as a sole active, more often combined with glycolic, lactic, and mandelic acids.
Evidence by route
Topical application
CWeak evidence. In vitro data, open-label studies, or expert consensus.
Clinical studies of malic acid alone are limited. Most AHA peel data concern glycolic and lactic acids. Within combination acid serums and peels, malic acid contributes to the overall exfoliation effect.
- Rendon MI et al. J Drugs Dermatol. 2010;9(6 Suppl):s6-s11.
Tolerability and safety
Irritation potential
MediumAllergen risk
LowPregnancy
CautionSkin types
Suitable for
Use with caution
Frequently asked questions
Is Malic Acid safe during pregnancy?
Malic Acid should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
What skin types is Malic Acid for?
Malic Acid suits: normal, combination, oily. Use with caution in: sensitive, dry.
Can Malic Acid irritate the skin?
Malic Acid has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.