Polyurethane-15 is a synthetic film-forming polymer used in cosmetic formulations, particularly in long-wear and water-resistant products such as mascaras, eyeliners, and hair styling products. It forms a flexible, durable film on the skin or hair surface to improve product longevity and wear resistance.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation | Rare | Mild irritation may occur in sensitive individuals. |
Contact dermatitis | Very rare | Allergic contact reactions are uncommon and poorly documented. |
Eye irritation | Rare | Possible when used in eye-area products if accidental contact occurs. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.