Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein
A conditioning soy protein. It smooths skin and holds moisture. Well tolerated.
Evidence by route
Topical application
A conditioning protein. 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
Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein is a hydrolyzed soy protein modified with a cationic group. That positive charge lets it cling to skin and hair, where it lays down a thin film, smooths the surface and helps hold water. It shows up in conditioners, hair masks and creams with a silky feel. This is a functional conditioning ingredient, not an active with biological action. It softens to the touch and improves combing, but it does not penetrate to rebuild the hair fiber or the skin's collagen. The effect sits on the surface and is cosmetic, useful but modest. With topical use its passage into the body is minimal, so you can use it during pregnancy and breastfeeding. Tolerance is high: irritation and allergy potential are both low, and it suits sensitive skin. Since it comes from soy, people with a known soy allergy should keep that in mind, though hydrolyzed proteins rarely trigger a skin reaction.
Frequently asked questions
Is Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein safe during pregnancy?
Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein for?
Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein suits: normal, dry, combination, oily, sensitive.
What is Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein and what does it do in cosmetics?
A conditioning soy protein.
What's the INCI name for Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein?
The INCI name is Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein.
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