Polyurethane Crosspolymer-1 is a synthetic crosslinked polymer used in cosmetic formulations primarily as a film-forming and viscosity/texture modifier. It helps create smooth, even films on skin, improving spreadability, wear, and sensory feel without providing a biological treatment effect.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation | Rare | Mild redness or stinging possible in sensitive individuals. |
| Contact allergy/sensitization | Very rare | Allergic contact dermatitis is uncommonly reported for polyurethane-based polymers. |
| Transient occlusive feel or clogging in acne-prone skin | Rare | Film-forming polymers may feel occlusive for some users, though comedogenicity is generally low. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.