Ingredient deep-dive
PEG (Polyethylene Glycol): Is It a Microplastic?
Medium concernPEG / glycol
Synthetic polymer / surfactant family. Often contaminated with 1,4-dioxane during manufacture.
Where it appears
- Moisturizers
- Sunscreens (as emulsifier)
- Shampoos and conditioners
- Toothpaste (as thickener)
Regulatory status (2026)
European Union
Permitted but ethylene oxide impurities and 1,4-dioxane contamination flagged in ongoing safety review.
United States
FDA permits cosmetic use; California Prop 65 requires 1,4-dioxane labeling above threshold.
Cleaner alternatives
- Glycerin
- Sorbitol
- Plant-derived emulsifying wax NF
Use the app
Scan any product for PEG (Polyethylene Glycol) in 5 seconds
The MicroPlastics iOS app flags this ingredient and 24 others instantly. Paste a label into the free web ingredient checker first if you want a no-install scan.
Download on the App StorePEG (Polyethylene Glycol) — common questions
Is PEG (Polyethylene Glycol) a microplastic?
Yes — it is classified as a synthetic polymer. Synthetic polymer / surfactant family. Often contaminated with 1,4-dioxane during manufacture.
Is PEG (Polyethylene Glycol) banned?
EU: Permitted but ethylene oxide impurities and 1,4-dioxane contamination flagged in ongoing safety review. US: FDA permits cosmetic use; California Prop 65 requires 1,4-dioxane labeling above threshold.
What can I use instead of PEG (Polyethylene Glycol)?
Cleaner alternatives include: Glycerin; Sorbitol; Plant-derived emulsifying wax NF.
What products contain PEG (Polyethylene Glycol)?
Commonly found in: Moisturizers; Sunscreens (as emulsifier); Shampoos and conditioners; Toothpaste (as thickener).