PEG-20

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.
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Snapshot

Overview
Helps blend oil and water while drawing moisture into the skin.
Category
Hydration, Skin Conditioning
Type
Humectant

Ratings

Overall Rating

Good

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

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.

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.

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.