Other
PEG-800
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A very large polyethylene glycol — too big to penetrate skin, so it works as a surface-level thickener and film-former in cosmetic products.
PEG-800 (CAS 25322-68-3) is a very high-molecular-weight polyethylene glycol with approximately 800 ethylene oxide units (MW ~35,000 Da). Its extremely large molecular size prevents skin penetration entirely, making it function purely as a viscosity modifier, binder, and film-forming agent. The CIR Expert Panel's assessment of PEGs applies, noting safety for cosmetic use. Standard manufacturing purity controls for 1,4-dioxane and ethylene oxide residues apply, though the high MW means less reactive end groups proportionally.
Skin benefits
- Non-penetrating surface film formation
- Viscosity control
- Product texture enhancement
- Binding agent
Known concerns
- Potential trace 1,4-dioxane from ethoxylation process
- Environmental biodegradability concerns for high-MW polymers
- Petroleum-derived
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.