Ethyl Ascorbic Acid (EAA)
3-O-Ethyl Ascorbic Acid
Vitamin C Derivative
Stability
9/10
Excellent
Irritation Risk
Low
for most skin types
Bioavailability
8/10
skin absorption
pH Needed
pH 4.5–6.5
for efficacy
What Is It?
The best all-rounder Vitamin C derivative for Indian skin. EAA offers exceptional stability even in warm conditions, making it ideal for a country like India where temperatures and humidity are high. It converts to pure Vitamin C upon absorption.
🔬 The Science
The ethyl group at the 3-position of Ascorbic Acid's ring structure protects it from oxidation, while maintaining the ability to be hydrolyzed back to LAA by intracellular enzymes. Bioavailability is nearly equivalent to pure LAA.
⚗️ Stability Note
Highly stable — does not require refrigeration. Does not oxidize or change color during shelf life.
Optimal Concentration
Available Range
5%–20%
Our Recommendation
10%–15%
Best For
- Sensitive Skin
- Indian Climate Use
- Beginners
- Year-round use
Avoid If
Generally safe for all skin types.