Science
Mechanism of Action
This ingredient functions as a skin lightening agent by actively inhibiting tyrosinase, the key enzyme in melanin production. Upon application, esterases within skin cells hydrolyze Kojic Isopalmitate, precisely releasing kojic acid directly into the skin. The liberated kojic acid then effectively chelates the copper ion at tyrosinase's active site, thereby impeding the conversion of DOPAchrome into DHICA and subsequently decelerating the formation of melanin.
Research
Clinical Evidence
High confidence3.0-5.0%
Key findings
- 01 Demonstrated effectiveness and safety as a therapeutic agent for melasma within a combination cream, leading to a 51-57% reduction in hyperpigmentation among subjects without inducing skin irritation.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Kojic Isopalmitate exhibits superior stability against light, heat, and oxidation compared to pure kojic acid, maintaining efficacy across a broad pH range of 3 to 10. It does not chelate metal ions directly. For enhanced stability, formulators should consider incorporating antioxidant excipients and formulating it within the internal oil phase of oil-in-water (o/w) emulsions.
Safety
Safety Profile
Generally considered a non-toxic and safe cosmetic ingredient when utilized within recommended concentrations of 1-5%. While its parent compound, Kojic Acid, has specific regulatory concentration limits due to potential irritation, Kojic Isopalmitate is a more stable and less irritating derivative. Concentrations exceeding 5% may elevate the risk of skin irritation or sensitization. It is not classified as a drug by the FDA.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Kojic Isopalmitate is a valuable ingredient for precision skincare, offering effective and stable skin brightening with a low irritation profile across a wide range of formulations and skin types.
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References
Sources