Science
Mechanism of Action
As a fatty amphocarboxylate, Stearoamphoacetic Acid functions as a surfactant by reducing surface tension, which aids in lifting and dissolving impurities for effective skin cleansing. Its emulsifying properties are crucial for stabilizing formulations, ensuring a homogeneous blend of immiscible liquids and enhancing product integrity. It can also act as a foam booster.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As an amphoteric surfactant, Stearoamphoacetic Acid is anticipated to exhibit good stability across a broad pH range due to its zwitterionic nature, which allows it to adapt to varying pH environments. No specific optimal pH range or explicit incompatibilities for this particular ingredient have been documented.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed the broader class of Fatty Amphocarboxylates, including amphoacetates, concluding their safety under current use practices and concentrations. However, a specific maximum concentration for Stearoamphoacetic Acid itself has not been identified. A potential allergen, aminoethylethanolamine (AEEA), has been noted as an impurity in chemically related coco- and lauroamphoacetates. No direct SCCS opinion or explicit FDA GRAS status for Stearoamphoacetic Acid as a cosmetic ingredient is available.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Stearoamphoacetic Acid is a valuable functional ingredient for formulating stable cleansers and emulsions, leveraging its surfactant and emulsifying properties, though specific active skin benefits beyond these roles require further investigation.
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References
Sources