Thickener
PEG-1M
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A high-molecular-weight polyethylene glycol polymer with generally low skin penetration and a fairly established cosmetic profile.
PEG-1M is a large polyethylene glycol polymer used for thickening, binding, or stability. High-molecular-weight PEGs are usually low concern on intact skin because they penetrate poorly, though good manufacturing control is still needed to minimize residual ethylene oxide or 1,4-dioxane impurities from production. That keeps the score good but not perfect.
Function
Known concerns
- Ethoxylated ingredients require good impurity control during manufacturing
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related thickeners
Check your shelf
Find PEG-1M in your products.
Scan any cosmetic product with LuxSense to see if it contains PEG-1M and get a full ingredient breakdown with safety scores.
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.