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Researched by Helena DeMaria-Williams

Formula IngredientAlpha Hydroxy Acid

Tartaric Acid

INCI: Tartaric Acid

Tartaric acid is a naturally occurring alpha hydroxy acid (AHA) found abundantly in grapes, tamarind, and wine. It works by loosening the bonds between dead skin cells on the surface, promoting gentle exfoliation to reveal brighter, smoother skin underneath. It is one of the larger AHA molecules, which makes it gentler and less deeply penetrating than glycolic or lactic acid.

Category

Alpha Hydroxy Acid

Irritation Risk

Low

Skin Types

all skin types, sensitive skin, dry skin, dull skin, hyperpigmentation, uneven texture, anti-ageing concerns

What does this do in a formula?

exfoliation, brightening, smoothing texture, fading hyperpigmentation, pH buffering, improving skin tone

Is Tartaric Acid safe? Key considerations

Can Tartaric Acid cause irritation?

Low Risk

Tartaric acid is generally considered milder than glycolic or lactic acid due to its larger molecular size, which limits skin penetration. Stinging, redness, or tingling can still occur at higher concentrations or on sensitive skin. No specific EU CosIng Annex II or III restrictions apply to tartaric acid in cosmetics; it is listed in CosIng as a buffering and masking agent.

Does Tartaric Acid increase sun sensitivity?

Yes Risk

As an AHA, tartaric acid can increase photosensitivity by removing the outermost layers of dead skin cells. Daily use of SPF 30+ is recommended when using tartaric acid-containing products, particularly in leave-on formulations.

Is Tartaric Acid safe during pregnancy?

Caution

Low-concentration tartaric acid in rinse-off or leave-on formulations is generally considered low risk during pregnancy, in line with other AHAs. Professional-strength peels should be avoided. As with all AHAs during pregnancy, consult a healthcare provider before use. No specific reproductive toxicity flags are noted in available safety data.

How does Tartaric Acid work?

Tartaric acid is a naturally occurring alpha hydroxy acid (AHA) found abundantly in grapes, tamarind, and wine. It works by loosening the bonds between dead skin cells on the surface, promoting gentle exfoliation to reveal brighter, smoother skin underneath. It is one of the larger AHA molecules, which makes it gentler and less deeply penetrating than glycolic or lactic acid.

Individuals with active skin wounds, sunburned skin, known sensitivity to AHAs should review the considerations above before use.