Film Former
METHACRYLOYL HYDROLYZED SOY PROTEIN
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A methacrylate-modified soy protein used for film-forming and conditioning in hair products. Generally low-concern but monomer purity matters.
Methacryloyl hydrolyzed soy protein is hydrolyzed soy protein chemically modified with methacryloyl groups, giving it polymerizable or film-forming properties useful in hair care (styling polymers, repair masks) and some skin-care formulations. It combines the substantivity of a protein backbone with the polymer reactivity of methacrylate chemistry. Safety depends heavily on the purity of the finished polymer — residual unreacted methacrylate monomer is a documented sensitizer. Soy origin introduces a theoretical allergen concern for highly soy-allergic users. No dedicated CIR or SCCS opinion located for this specific derivative.
Function
Skin benefits
- Film-forming protein derivative for hold in hair products
- Conditioning effect on damaged hair cuticles
- Substantive to hair and skin surface
Known concerns
- Soy-derived; theoretical allergen risk for soy-sensitive users
- Residual methacrylate monomer could be a concern if not well-purified
- Limited independent safety literature for this modified protein
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.