Stable vitamin C derivative. Better pH stability than L-ascorbic acid; penetrates skin and converts to the active form. Antioxidant and brightening effect.
Topical application
AProven efficacy. Two or more independent RCTs with instrumental endpoints.
Modern stable vitamin C form with accumulated evidence base. Does not cause the irritation typical of pure L-ascorbic acid.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
Works well with
Hydroxypinacolone RetinoateГидроксипинаколон ретиноат
Granactive Retinoid (HPR) activates at neutral pH, so stable C forms pair well. With ethyl ascorbate, no irritation and no loss of activity for either molecule.
RetinolРетинол
Unlike L-ascorbic acid, ethyl ascorbate is stable at neutral pH, so it can sit in the same formula or routine as retinol. Alternation is optional: C in the morning with SPF and retinol at night is best, but a single product works too.
RetinaldehydeРетиналь
Retinal is sensitive to low pH, so L-AA does not pair with it. Ethyl ascorbate works at neutral pH and can be combined with retinal without loss of activity for either.
3-O-Ethyl Ascorbic Acid is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
3-O-Ethyl Ascorbic Acid suits: normal, dry, oily, combination, sensitive.
Stable vitamin C derivative.
The INCI name is 3-O-Ethyl Ascorbic Acid. It may also appear as: Ethyl Ascorbic Acid, EAA.
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