Science
Mechanism of Action
The ingredient functions through a dual mechanism: the palmitoyl fatty acid group significantly boosts its oil solubility and affinity for the lipid-rich skin barrier, optimizing skin penetration. Once absorbed, the small-molecular-weight silk amino acids bind effectively to skin keratin, reinforcing the natural protective barrier and substantially enhancing moisture retention. This action supports underlying collagen structures, promotes skin elasticity, refines texture, and may contribute to antioxidant and UV-protective capabilities.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The palmitoyl group is instrumental in enhancing both oil solubility and overall formulation stability. While specific pH ranges were not detailed, stability for related compounds has been noted at neutral pH in solutions. The Cosmetic Ingredient Review (CIR) Panel advises that manufacturers ensure the production of residual peptides is minimized.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that amino acid alkyl amides, the class encompassing Palmitoyl Silk Amino Acids, are safe under current practices of use and concentration in cosmetics, provided they are formulated to be non-irritating. Upon dermal penetration, these compounds are expected to metabolize into amino acids and fatty acids, both of which possess established safety profiles.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Palmitoyl Silk Amino Acids are a valuable ingredient offering significant skin conditioning, hydration, and texture-improving benefits, with a favorable 'safe as used' CIR status for all skin types, provided it is formulated to be non-irritating.
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References
Sources