Film Former
ROSIN/FORMALDEHYDE COPOLYMER
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A rosin/formaldehyde resin used as a film-former and tackifier in long-wear makeup. Carries both formaldehyde-release concern and the well-known rosin contact-allergen profile. Best avoided in modern formulations.
Skin benefits
- Film-forming for long-wear cosmetics
- Tackifier for adhesive cosmetic systems
- Mascara and eyeliner durability
Known concerns
- Residual formaldehyde — CMR1B carcinogen
- Rosin is a known fragrance/contact allergen
- EU restricts formaldehyde in cosmetics (Annex II/III)
- Sensitisation risk for eczema-prone skin
- Not compatible with formaldehyde-free product claims
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related film formers
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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.