Science
Mechanism of Action
It functions as an astringent by constricting body tissues and shrinking pores. Additionally, it is bacteriostatic, creating an acidic environment on the skin to inhibit odor-causing microbial growth without blocking sweat glands.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Al-Talib et al. (2016) demonstrated complete inhibition of axillary malodor-producing bacteria at 0.75% in vitro.
- 02 Medical News Today (2023) noted its use as a 100% solid crystal deodorant to form a bacteriostatic film.
Transparency
Dusting Analysis
Ammonium Alum is typically used at concentrations where it forms a bacteriostatic film, notably as a solid deodorant stone (100%), and its efficacy is observed at higher percentages.
The Formula
Formulation
Stability
It is highly water-soluble, forming naturally acidic solutions that are stable in a pH range of 3.0-5.0. Solubility increases with temperature and it is insoluble in alcohol.
Conflicts
- Strongly alkaline ingredients
- Alcohol
- High concentrations of ammonium sulfate
Safety
Safety Profile
The CIR has deferred evaluation as it is classified as Generally Recognized As Safe (GRAS) by the FDA for food and OTC oral health products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ammonium Alum is a valuable ingredient, particularly for its bacteriostatic and astringent properties, offering a well-tolerated solution for odor control and tissue constriction.
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