Film Former
ROSIN HYDROLYZED COLLAGEN
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Rosin reacted with hydrolyzed collagen — a conditioning film former for hair and nails. Rosin is a well-known contact allergen, so caution is needed in leave-on products.
Rosin hydrolyzed collagen is a conjugate of colophony (pine rosin acids) with animal-derived hydrolyzed collagen peptides. It combines collagen's substantivity to hair with rosin's tack and film-forming properties. Rosin (colophony) is one of the most established contact allergens in dermatology, on most standard patch-test series (e.g., ICDRG baseline). Sensitization risk depends on abietic-acid content and product format; rinse-off risk is lower than leave-on. Not EU-restricted but is flagged in SCCS fragrance-allergen/rosin literature. Not vegan.
Function
Skin benefits
- Conditions and builds film on hair
- Adds hold to styling products
- Compatible with keratin fibers
Known concerns
- Rosin (colophony) is a known contact allergen
- Animal-derived collagen limits vegan use
- Can cause sensitization in repeat leave-on exposure
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 — always read the physical product label and consult a healthcare professional for personal concerns.