Science
Mechanism of Action
This ingredient functions by delivering vital amino acids—such as cysteine, methionine, and lysine—which are fundamental building blocks for keratin, collagen, and elastin. The attached palmitic acid moiety improves solubility and skin penetration, enhancing emollient properties. On the skin, it acts as a humectant to attract and retain water, reinforces the skin's protective barrier, helps soothe rough or dry areas, and assists in regulating pH balance, thereby supporting natural regenerative processes.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient generally exhibits stability under standard storage conditions, provided it is protected from excessive heat and moisture.
Conflicts
- Avoid use in cosmetic products where the formation of N-nitroso compounds is possible.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed amino acid alkyl amides, including Palmitoyl Keratin Amino Acids, safe for cosmetic use when formulated to be non-irritating. Manufacturers are advised to minimize residual peptide production and ensure the ingredient is not present in formulations conducive to N-nitroso compound formation. Specific use concentration data were not available at the time of the CIR assessment.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Palmitoyl Keratin Amino Acids are a valuable multi-functional ingredient offering significant conditioning, moisturizing, and reparative benefits for all skin types, provided formulation adheres to CIR safety guidelines.
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References
Sources