Glycol

Glycol is a general term for dihydric alcohols (diols) such as propylene glycol or butylene glycol widely used in cosmetics. They're included to dissolve actives, adjust viscosity, and improve slip, with properties varying by the specific molecule.
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Ingredient Snapshot

Overview
A common ingredient that helps dissolve actives and lightly hydrates skin.
Category
Hydration, Skin Conditioning
Type
Solvent

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Can provide lightweight surface hydration and smoother spread. Aids even application and reduces tight-feel after cleansing in many formulas.

Uses In Skincare & Cosmetics

Common in toners, essences, and serums; frequently present in sunscreens and primers to improve layering and sensorial performance.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally safe at cosmetic levels but may cause stinging or redness in sensitive skin; patch testing is prudent. No broad regulatory restrictions apply to the class as a whole.

Is Glycol a Good Ingredient?

It's Fair because benefits vary widely across different glycols and are often secondary to their main job as a solvent. Some glycols can irritate or sensitize certain individuals, especially at higher levels, which is what keeps the category rating moderate.

Products with Glycol

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