Science
Mechanism of Action
Broken into smaller peptides and amino acids, it forms a breathable film that attracts and retains moisture on the stratum corneum. This peptide network enhances skin barrier function and strengthens hair.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Le-Nutra
- 02 Safety Assessment of Keratin and Keratin-Derived Ingredients as Used in Cosmetics (CIR)
- 03 The cosmetic and dermatological potential of keratin hydrolysate (ResearchGate)
Transparency
Dusting Analysis
No data suggests this ingredient is commonly dusted.
The Formula
Formulation
Stability
Generally stable to temperature, shorter peptides offer pH buffering. Higher molecular weight types enhance emulsifying, while lower weights are not suitable for emulsion preparation.
Conflicts
- Protein-surfactant interactions can affect cleansing performance and protein deposition in shampoo formulations, potentially necessitating conditioning agents or cationic polymers to enhance substantivity.
Safety
Safety Profile
The CIR Expert Panel found it safe for cosmetic use up to 25%. However, human-derived hydrolyzed keratin is prohibited in the EU, with reputable cosmetic grades sourced from non-human keratin.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed Hair Keratin is a valuable ingredient due to its effective moisturizing and conditioning properties for both skin and hair, supported by a strong safety profile.
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