Science
Mechanism of Action
It generates sulfate radicals that oxidize melanin in hair, leading to decolorization. On skin, these radicals can react with organic materials and proteins, potentially causing irritation or hypersensitivity reactions.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 A 2001 CIR report found a mixture of persulfates at 17.5% under occlusion was not sensitizing or urticarial.
- 02 A 2015-2019 study identified a 2.85% allergic reaction prevalence at 2.5% in patch testing, indicating it as an occupational allergen.
- 03 CIR's 2015/2017 assessment estimated an EC3 value of 1.9%, categorizing it as a moderate skin sensitizer.
Transparency
Dusting Analysis
There is no available data regarding this ingredient being commonly dusted in cosmetic formulations.
The Formula
Formulation
Stability
Aqueous solutions are acidic and slowly decompose at room temperature, forming ammonium bisulfate and releasing oxygen. It decomposes rapidly above 120°C.
Conflicts
- reducing agents
- organic materials
- powdered metals (aluminum, zinc)
- strong acids
- alkalis
- moisture (causes decomposition)
Safety
Safety Profile
The CIR deems it safe for rinse-off hair colorants and lighteners with brief, discontinuous use. Data is insufficient for leave-on products, and concentrations above 17.5% may cause urticarial reactions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to its high irritancy, significant sensitization risk, and restricted use to rinse-off applications, Ammonium Persulfate is not suitable for precision skincare.
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