Science
Mechanism of Action
Hydrolyzed wool (keratin) acts as a humectant and skin protectant, binding moisture and reinforcing the skin barrier. It stimulates keratinocyte migration and the expression of essential collagens, while its cysteine content supports antioxidant functions.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Experimental Dermatology journal, research by University of Miami (keratinocyte migration, collagen expression)
- 02 Cosmetic effectiveness of topically applied hydrolysed keratin peptides and lipids derived from wool - PubMed (hydration, elasticity, barrier integrity)
- 03 Safety Assessment of Keratin and Keratin-Derived Ingredients as Used in Cosmetics (CIR) (adverse effects at 3%)
Transparency
Dusting Analysis
There is no specific data indicating that hydrolyzed wool is commonly dusted; its efficacy is dependent on appropriate concentrations.
The Formula
Formulation
Stability
Hydrolyzed keratin is water-soluble; for emulsions, add below 40°C after formation. Optimal pH ranges from 5.0 to 7.5, though some products may prefer 5.0-5.8 or 6-7.5.
Conflicts
- Direct addition to some conditioners may cause precipitation; requires pre-dissolving in a water-phase solution.
Safety
Safety Profile
The CIR Expert Panel concluded that keratin-derived ingredients, including hydrolyzed keratin, are safe in current cosmetic uses. It is non-irritating at 100% and showed low ocular irritation, with only rare reports of allergic reactions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed wool offers significant benefits for skin hydration, elasticity, and barrier repair with a strong safety profile, making it a valuable skincare ingredient for various skin types.
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