Science
Mechanism of Action
This ingredient functions as a chelating agent, forming complexes with metal ions that could otherwise destabilize or alter the appearance of cosmetic products. It critically regulates pH, stabilizing the product's acidity or alkalinity within a desired range. Furthermore, it aids in formulation by acting as an emulsifier, binding water and oil phases, and as a dispersing agent, preventing the re-aggregation of components.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Tetrapotassium Pyrophosphate presents as a hygroscopic solid, maintaining stability under standard ambient storage and handling conditions. A 1% aqueous solution is notably alkaline, exhibiting a pH range of 9.5 to 11.5, which is indicative of its buffering capacity.
Conflicts
- strong acids
- oxidizing agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) panel concludes that Tetrapotassium Pyrophosphate is safe for use when incorporated into non-irritating formulations. However, the CIR also notes that the comprehensive weight of evidence for skin, eye, or lung irritation remains unknown or unassessed. While the U.S. FDA classifies it as 'Generally Recognized as Safe' (GRAS) for human food consumption, with an acceptable daily intake (ADI) of 70 mg/kg of body weight per day, direct contact with high concentrations may induce skin irritation, particularly in individuals with sensitive skin, and can cause serious eye irritation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Tetrapotassium Pyrophosphate is a valuable formulation aid, crucial for maintaining product stability, appearance, and optimal pH balance in a variety of skincare applications.
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