What is 3-O-ethyl ascorbic acid?

It's a stabilized form of vitamin C that's more shelf-stable than L-ascorbic acid, used in serums and creams for potential antioxidant benefits. The body converts it to active vitamin C.

Is ethyl ascorbic acid irritating?

Published data does not show widespread irritation concerns. It's generally considered gentler than L-ascorbic acid, though individual sensitivities can occur.

antioxidant · active

3-O-Ethyl Ascorbic Acid

Generally safe·Moderate evidence

A stable vitamin C derivative used to brighten and provide antioxidant support, more shelf-stable than pure ascorbic acid. It is generally well tolerated, though strong vitamin C forms can sting sensitive skin.

Questions

What is 3-O-ethyl ascorbic acid?: It's a stabilized form of vitamin C that's more shelf-stable than L-ascorbic acid, used in serums and creams for potential antioxidant benefits. The body converts it to active vitamin C.
Is ethyl ascorbic acid irritating?: Published data does not show widespread irritation concerns. It's generally considered gentler than L-ascorbic acid, though individual sensitivities can occur.

Products with 3-O-Ethyl Ascorbic Acid

In our guides

Ingredients
Vitamin C serums: forms, stability, and what actually matters

References

Cosmetic Ingredient Review ↗

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.