Characteristics
- INCI
- Hydrolyzed Soy Protein
- CAS
-
68607-88-5
This is the substance number in the Chemical Abstracts Service registry. The CAS number uniquely identifies a substance regardless of language, trade name, or synonyms.
- EC
-
271-770-5
This is the substance number in the European chemical identification system (EC number), used in European regulatory databases including ECHA/CosIng.
- Functions
- antistatic, hair conditioning, humectant, skin conditioning
Who it's for
Description
Hydrolyzed Soy Protein is a soy-derived ingredient that has been broken down into smaller protein fragments, making it easier to use in cosmetic formulas. In skincare and haircare, it’s mainly valued as a conditioning and film-forming ingredient. On skin, it can help support a smoother, softer feel and reduce the look of dryness. In hair products, it’s often used to improve slip, add a touch of body, and make strands feel more manageable.
This ingredient can be a nice fit for people looking for lightweight hydration support, especially in moisturizers, serums, shampoos, conditioners, and leave-ins. It’s often appreciated by those with dry, rough, or chemically treated hair, since it can help hair feel less brittle and more polished. In skincare, it may be useful in formulas aimed at a supple, comfortable finish rather than a heavy, occlusive feel.
Caveats: hydrolyzed soy protein is not a miracle repair ingredient, and its effects are mostly cosmetic and temporary. Because it’s soy-derived, people with soy sensitivities may want to check the full formula and patch test first. As always, the overall product matters more than any single ingredient.
Products with Hydrolyzed Soy Protein (2 477 total)
Most often found in L'Oreal products (67 items)
