Polyurethane

Polyurethane is a synthetic polymer formed by reacting polyols with diisocyanates, producing versatile elastomeric materials. In cosmetics it creates thin, adaptable films that improve glide, add wear durability, and refine the finished look.
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Ingredient Snapshot

Overview
A film-forming polymer that helps makeup last longer and feel light.
Category
Tone/Texture, Skin Conditioning
Type
Film Former

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps makeup last longer while maintaining a light, comfortable feel. Minimizes tack for smoother application and a more polished appearance.

Uses In Skincare & Cosmetics

Common in primers and liquid foundations for longer wear. Also used in mascaras and liquid eyeliners to support a clean, precise look.

Comedogenic Rating

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

Safety

Typically considered inert in finished cosmetics with a low likelihood of irritation or sensitization. Rare individuals may experience discomfort from occlusion or residual trace substances; discontinue use if redness occurs. No specific cosmetic-use restrictions are commonly noted at typical levels.

Is Polyurethane a Good Ingredient?

Rated Good because it reliably forms flexible, durable films that improve wear and glide with generally low irritation potential. Performance is strong across formats, though benefits depend on grade and formulation context rather than clinical outcomes.