Science
Mechanism of Action
On the skin, Tricalcium Phosphate acts as a gentle physical exfoliant, aiding in the removal of dead skin cells. Within formulations, it serves as a buffering agent, helping to maintain a stable pH. Its opacifying properties reduce product transparency, while its bulking nature adds volume. The ingredient also possesses absorbent qualities for managing excess moisture and oils, stabilizes emulsions by preventing oil-water separation, and imparts a desirable velvety texture.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Tricalcium phosphate exhibits low solubility in water (1.2 mg/kg) but dissolves readily in dilute acids. It is chemically stable under standard ambient conditions (room temperature) and functions effectively as a buffering agent to maintain product pH. However, it decomposes when exposed to hot water.
Conflicts
- Hot water
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed Tricalcium Phosphate but concluded with 'insufficient data' for a comprehensive safety determination with specific maximum concentrations for cosmetic use. The FDA classifies it as Generally Recognized As Safe (GRAS) for food applications. Animal studies suggest a negligible skin irritation potential, and EWG also indicates a low potential for skin, eye, or lung irritation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Tricalcium Phosphate is a valuable multi-functional ingredient that enhances product aesthetics and stability through mild exfoliation, pH buffering, and texture modification, although specific clinical data on its direct skin treatment efficacy is currently limited.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources