Science
Mechanism of Action
This ingredient functions primarily as a potent buffering agent, crucial for stabilizing a cosmetic product's pH against environmental shifts. Concurrently, it acts as a chelating agent, binding to free metal ions that could otherwise catalyze oxidative degradation, particularly safeguarding sensitive actives like ascorbic acid and preserving product aesthetics.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient maintains stability under typical usage and storage conditions; however, it exhibits hygroscopic properties and gradually transforms into orthophosphoric acid when exposed to water.
Conflicts
- strong bases
- most metals
- moisture
Safety
Safety Profile
The Cosmetic Ingredient Review Expert Panel has affirmed Metaphosphoric Acid's safety for use in cosmetics, provided the final formulation is non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Metaphosphoric Acid is a valuable functional ingredient that enhances product longevity and stability by buffering pH and chelating metal ions within cosmetic formulations.
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References
Sources