Hydrolyzed Soy Protein
A hydrolyzed soy protein. It forms a soft film, retains water and smooths skin. Well tolerated.
Evidence by route
Topical application
A functional protein humectant. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Hydrolyzed Soy Protein is soy protein broken into smaller peptides so it spreads and absorbs better in a formula. In creams and hair products it forms a light film that holds water and leaves the surface smoother and softer. It works as a humectant and texture conditioner. It gives a real surface-smoothing effect, but it does not act deeply on wrinkles or restructure the skin; it is a moisture-support component. For topical use it has no systemic relevance, so it can be used during pregnancy and breastfeeding. Tolerance is good, with low irritation and allergy risk. People with a known soy allergy should keep it in mind, though skin reactions to the hydrolyzed protein are uncommon.
Frequently asked questions
Is Hydrolyzed Soy Protein safe during pregnancy?
Hydrolyzed Soy Protein is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Hydrolyzed Soy Protein for?
Hydrolyzed Soy Protein suits: normal, dry, combination, oily, sensitive.
What is Hydrolyzed Soy Protein and what does it do in cosmetics?
A hydrolyzed soy protein.
What's the INCI name for Hydrolyzed Soy Protein?
The INCI name is Hydrolyzed Soy Protein.
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Ingredients in the same category
Hydrolyzed Ulva Lactuca Extract, Hydrolyzed Vegetable Protein, Hydrolyzed Wheat Flour, Hydrolyzed Wheat Gluten, Panthenol (Provitamin B5), Squalane, Butyrospermum Parkii Oil, Fructan
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