Science
Mechanism of Action
It functions by utilizing a two-component equilibrium of acetate and ammonium ions, effectively stabilizing the pH. In hair dyes, it specifically regulates acidity to optimize colorant penetration.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Budavari, S. (ed.). The Merck Index; Hazardous Substances Data Bank (HSDB)
Transparency
Dusting Analysis
No specific information indicates this ingredient is commonly dusted in typical cosmetic formulations.
The Formula
Formulation
Stability
Highly hygroscopic and deliquescent, it tends to lose ammonia and become acidic when exposed to heat or air. It provides maximum buffering capacity around pH 4.75 and 9.25.
Conflicts
- strong oxidizing agents
- strong acids
- strong bases
- pure acetonitrile (causes precipitation)
Safety
Safety Profile
The CIR Expert Panel found ammonium salts and related pH adjusters safe when formulated to be non-irritating. It is volatile and can decompose into ammonia and acetic acid.
Your Skin
Skin Compatibility
Our Assessment
Verdict
As a safe and effective buffering agent, Ammonium Acetate is valuable for maintaining formulation stability and optimizing product performance across various cosmetic applications.
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References
Sources