Hy
Hydrolyzed Wheat Protein/PVP Crosspolymer
Hydrolyzed Wheat Protein/PVP Crosspolymer
Wheat protein bonded to PVP, used to form a film and hold hair.
What it does
It’s wheat protein, broken into smaller pieces and bonded to PVP, a film-forming polymer. The EU lists it to form a film, condition hair and hold styles.
The evidence, graded
expert consensusUS safety reviewers (2024) assessed 30 vinylpyrrolidone (VP) polymers, most of which products use to form a film. They judged 27 of them safe as used, PVP, triacontanyl PVP and hydrolyzed wheat protein/PVP crosspolymer among them; for the other 3, all urethanes, the data were too thin to judge.Johnson 2024 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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