Science
Mechanism of Action
As a potassium salt of caprylic acid, Potassium Caprylate primarily functions by disrupting the cell membranes of certain fungi and bacteria, thereby exerting antimicrobial and antifungal effects. In formulations, it acts as an emulsifier by reducing the surface tension between immiscible liquids, ensuring product stability. It also contributes to skin conditioning, leaving the skin feeling soft and smooth.
Research
Clinical Evidence
Medium confidence0.5%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Potassium Caprylate exhibits stability under standard storage conditions, maintaining a stable shelf life of two years when stored in a cool, dry environment within a tightly sealed container. A 10% solution of Potassium Caprylate typically has a pH ranging from 8.5 to 10.5.
Conflicts
- Strong oxidants (can induce combustion)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Panel has deemed fatty acids and their salts, including Potassium Caprylate, safe for cosmetic use when formulations are developed to be non-irritating and non-sensitizing. While there is no specific maximum concentration set for Potassium Caprylate by CIR, similar fatty acid salts used as preservatives may have restrictions (e.g., 0.2% as acid). The US FDA recognizes Caprylic Acid (its parent acid) as Generally Recognized As Safe (GRAS) for food use, and Potassium Caprylate is also considered a safe food additive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Potassium Caprylate is a valuable, multi-functional ingredient providing excellent emulsifying capabilities, mild preservation, and skin conditioning benefits, with promising antimicrobial activity and a low risk of irritation across all skin types.
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References
Sources