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Thickener

POLYURETHANE-97

78

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A film-forming polymer used to hold the formula together and condition nails. It is usually acceptable in well-formulated products, though sensitive skin can still react.

This is a high-molecular-weight polymer or silicone that mostly stays on the surface of skin, hair, or nails to create slip, adhesion, or a uniform film. At typical cosmetic use levels, the main downside is local irritation, allergy, or formula-dependent sensitivity rather than strong systemic risk.

Function

BINDINGNAIL CONDITIONING

Known concerns

  • Possible irritation from residual monomers or impurities

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.