INCI Name: 3-O-Ethyl Ascorbic Acid
Appearance: White to off-white crystalline powder
Solubility: Water-soluble (also soluble in ethanol and glycols)
Usage Rate: 0.5% – 5% (up to 10% in targeted systems)
Function: Brightening support, antioxidant protection, tone-evening, collagen support
Ethyl Ascorbic Acid is a next-generation vitamin C derivative engineered for improved formulation stability and skin compatibility. It supports visible radiance, more even-looking tone, and antioxidant defense while allowing a wider, skin-friendly pH range than traditional L-Ascorbic Acid.
3-O-Ethyl Ascorbic Acid delivers vitamin C activity with greater formulation robustness. It is less prone to rapid oxidation, performs across a broader pH window, and integrates easily into modern serums, gels, and emulsions.
Ethyl Ascorbic Acid is designed for improved stability and a broader pH range, making it easier to formulate and generally better tolerated than low-pH L-Ascorbic Acid systems.
Yes. It is suitable for AM use and layers well under sunscreen as part of an antioxidant routine.
It is less prone to oxidation than L-Ascorbic Acid, but best results are achieved with chelators, low-metal processing, and opaque or air-restrictive packaging.
Generally yes. It is often better tolerated than traditional vitamin C systems. Patch testing is recommended for reactive skin.
