HYDROLYZED SOY
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Hydrolyzed soy protein is a plant protein used to condition skin and hair, with lower allergenic potential than whole soy due to the hydrolysis process breaking down proteins.
Hydrolyzed soy protein is produced by enzymatic or acid hydrolysis of Glycine soja seeds, which breaks down the protein into smaller peptides and amino acids. Hydrolysis reduces the allergenic potential compared to intact soy protein. However, EU regulations still require allergen declaration for hydrolyzed soy protein. It is not listed on any EU restriction annexes beyond standard allergen labelling requirements. The ingredient is widely used in hair and skin care formulations as a conditioning agent.
Skin benefits
- Amino acids and peptides condition skin barrier
- Lower allergenic potential than whole soy
- Contains soy-derived isoflavones with antioxidant activity
Known concerns
- Must be labelled as allergen in EU (soy)
- Residual protein fragments may still trigger reactions in highly sensitized individuals
- Contains isoflavones from the soy source
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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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.