Polyglycerin-3 is a short-chain polymer of glycerin made of three linked glycerol units. It's used as a gentle humectant and co-solubilizing agent, improving moisture retention, slip, and compatibility in aqueous formulations.
A gentle humectant that hydrates skin without feeling greasy.
Category
Hydration
Type
Humectant
Ingredient Ratings
Overall Rating
Good
Comedogenic Risk
None
Skin Benefits
Provides lasting surface hydration without greasiness, supporting a comfortable, supple feel. Gentle enough for frequent use and sensitive skin routines.
Uses In Skincare & Cosmetics
Used in gels, toners, and cleansers as a mild hydrating agent that helps maintain clarity and easy rinse-off. Also found in lightweight moisturizers to improve water-based hydration.
Comedogenic Rating
This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.
Safety
Considered low-irritation and compatible with sensitive skin. No common regulatory restrictions. As with any humectant, pair with an emollient/occlusive if skin feels tight in very dry environments.
Is Polyglycerin-3 a Good Ingredient?
It's a gentle, water-soluble humectant that reliably improves hydration with minimal irritation and strong formulation stability, which is what supports the Good rating for routine use across skin types.