3-O-Ethyl Ascorbic Acid
A stable, water-soluble vitamin C derivative that avoids the instability headaches of pure L-ascorbic acid.
What is 3-O-Ethyl Ascorbic Acid?
3-O-ethyl ascorbic acid is a stabilised derivative of vitamin C used in brightening and antioxidant skincare. Formulators reach for it because it is far more stable than pure L-ascorbic acid while remaining water-soluble, which makes it much easier to build reliable, shelf-stable "vitamin C" products.
Key benefits in cosmetic formulations
- Markedly more stable than pure L-ascorbic acid
- Water-soluble — straightforward to formulate
- Supports brightening and antioxidant claims
- Enables reliable, longer-shelf-life vitamin-C products
Typical use level & formulation notes
- Use level
- 1–5%
- Solubility
- Water-soluble
- pH / stability
- Formulate in a mildly acidic range for best stability
- Form
- Powder
- Notes
- Dissolve fully in the water phase; still keep processing temperatures moderate and pair with a chelator for best long-term colour stability.
Guidance only — always confirm use levels and compatibility against the current technical data sheet and your own stability and safety testing.
Where it's used
- Vitamin-C brightening serums
- Antioxidant day formulations
- Even-tone essences
Documentation & sourcing
Every batch ships with a Certificate of Analysis (CoA) and Safety Data Sheet (SDS). We focus on hard-to-source specialty actives with small minimum order quantities, so indie brands and lab formulators can buy realistic amounts and scale later — stocked in and shipped across the EU.
Need 3-O-Ethyl Ascorbic Acid for a project?
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