Hy
Hydrolyzed Extensin
Hydrolyzed ExtensinHydrator
Conditions skin and hair and leaves a light, smooth film.
What it does
Extensin is a protein from plant cell walls; breaking it into small pieces lets it dissolve in water.
The EU’s ingredient database lists it as a skin conditioner, its general term for an ingredient that keeps skin in good condition.European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗
The evidence, graded
expert consensusUS safety reviewers (2022) judged 18 plant proteins, hydrolyzed vegetable protein and hydrolyzed extensin among them, safe as used; products use them mainly to condition skin and hair. Patch tests can’t detect the immediate kind of allergy proteins can cause. So they advise people allergic to tree nut, seed or avocado proteins to avoid products with these ingredients.Burnett 2022 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Browse all 809 ingredients — grouped by what they do, each with whatever evidence we can cite.
This page is public so a shared ingredient card always has its sources behind it — and so you can check them without an account.
Want more like this?
Every evidence-based flag cites its source, Drop tells you when your routine is complete, and it helps you simplify — instead of selling you more. The app launches on iOS and Android in October 2026. Rate my routine works today at /rate — no sign-in.