Ethyl Ascorbic Acid
Also known as: EAA, 3-O-Ethyl Ascorbic Acid, Ethylated Vitamin C
Stable vitamin C derivative that brightens skin, protects from oxidative stress, and supports collagen production.
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Get the appWhat it does
Ethyl ascorbic acid is a stable form of vitamin C that penetrates the skin and converts to pure ascorbic acid intracellularly. It neutralizes free radicals to prevent photoaging and works to inhibit tyrosinase, reducing melanin production. It also supports collagen synthesis for improved skin firmness and clarity.
Benefits
- Brightens dull skin and reduces hyperpigmentation with consistent use
- More stable than L-ascorbic acid; better shelf-life in formulas
- Antioxidant protection against UV damage and environmental stressors
- May improve skin texture and support firmness over time
Who it suits
- all skin types
- hyperpigmentation concerns
- dull or aging skin
- sensitive skin (more gentle than L-ascorbic acid)
How to use
Apply a few drops of serum to clean skin once daily, preferably morning. Allow to absorb before moisturizer; always follow with sunscreen.
Pairs well with
vitamin E, ferulic acid, niacinamide, hyaluronic acid
Be careful pairing with
niacinamide in very high doses (may reduce efficacy), unstable pH environments
Safety & cautions
Generally well-tolerated, but high concentrations (>10%) may cause irritation in sensitive skin. Results develop gradually over weeks; may cause mild dryness initially.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.