Solvent
PEG-55
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A medium-to-large polyethylene glycol used as thickener, binder, and solubiliser. Well-studied class with a strong safety record on intact skin, provided 1,4-dioxane is stripped during manufacturing.
Skin benefits
- Thickener, binder, and solubiliser
- Improves texture and viscosity
- Stable across pH range
- Generally well-tolerated
Known concerns
- 1,4-dioxane is a possible ethoxylation by-product — purified grade needed
- Should not be used on damaged skin per CIR
- Possible aquatic toxicity at higher concentrations
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related solvents
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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.