PEG-20 is a low-molecular-weight polyethylene glycol averaging 20 ethylene oxide units. It's used as a water-soluble carrier and lightweight humectant to improve slip and aid dispersion of small amounts of oil.
Helps blend oil and water while drawing moisture into the skin.
Category
Hydration, Skin Conditioning
Type
Humectant
Ingredient Ratings
Overall Rating
Good
Comedogenic Risk
None
Skin Benefits
Helps retain surface moisture so skin feels soft and comfortable. Improves slip for a smoother, less tacky finish in water-based products.
Uses In Skincare & Cosmetics
Often included in serums, gels, and toners as a water-compatible carrier to evenly incorporate oils or fragrance into clear formulas.
Comedogenic Rating
This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.
Safety
Generally low irritation and considered well tolerated in leave-on and rinse-off products. Rarely, sensitive or compromised skin may experience mild transient irritation. Cosmetic-grade PEGs are refined to limit residual ethoxylation byproducts.
Is PEG-20 a Good Ingredient?
Rated Good as a dependable water-soluble carrier and lightweight humectant that improves glide and texture with broad formula compatibility. It stops at Good because its benefits are mainly sensorial and functional rather than directly reparative to the skin.