Film Former
POLYUREA CROSSPOLYMER-4
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A highly crosslinked polyurea film former used for scratch-resistant long-wear coatings in nail and cosmetic products. Cured polymer is well-tolerated; residual diisocyanate monomer is the standard flag.
Function
Skin benefits
- Forms tough, durable films
- Excellent scratch resistance
- Long-wear performance
- Good for nail and cosmetic coatings
Known concerns
- Trace residual diisocyanate possible — sensitiser
- Not biodegradable
- Limited published cosmetic-specific safety data
- Sensitisation risk if poorly purified
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related film formers
Check your shelf
Find POLYUREA CROSSPOLYMER-4 in your products.
Scan any cosmetic product with LuxSense to see if it contains POLYUREA CROSSPOLYMER-4 and get a full ingredient breakdown with safety scores.
This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.