Antioxidant
METHOXY PEG-113 ASCORBIC ACID
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A high-molecular-weight PEGylated vitamin C — stabilizes ascorbic acid while maintaining antioxidant and skin conditioning properties.
Methoxy PEG-113 Ascorbic Acid is a conjugate of ascorbic acid (vitamin C) with a large methoxy PEG chain (PEG-113, ~5000 Da). CosIng-listed as antioxidant, humectant, and skin conditioner. The PEG conjugation dramatically improves vitamin C stability (normally highly oxidation-prone) and water solubility. No GHS codes or restrictions. Novel delivery system for vitamin C with likely slow-release kinetics.
Function
Skin benefits
- Antioxidant (vitamin C)
- Humectant
- Skin conditioning
- Improved stability over free ascorbic acid
Known concerns
- High-MW PEG — limited skin penetration of intact conjugate
- PEG-containing — trace 1,4-dioxane impurity possible
- Novel delivery — efficacy compared to traditional vitamin C forms unclear
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.