Science
Mechanism of Action
Due to its inherent alkalinity, it effectively neutralizes acidic components to achieve and maintain a desired pH range. It can also interact with fatty acids to generate stable, low-irritancy emulsifiers.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Clinical dermal tests showed a 1.92% concentration in mascara was non-irritating and non-sensitizing.
- 02 Studies confirmed 2.0% Aminomethyl Propanediol was neither a primary dermal irritant nor a dermal sensitizer.
- 03 A formulation containing 0.26% demonstrated no significant adverse skin reactions in primary irritancy tests.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is stable as a crystalline solid or liquid, highly alkaline before buffering, and stable when exposed to light.
Conflicts
- Nitrosating agents (e.g., Sodium Nitrite)
- Strong acids
- Mineral acids
Safety
Safety Profile
Initially restricted to 1%, it was re-evaluated as 'safe as used' up to 2%. It must not be formulated with nitrosating agents due to the risk of forming carcinogenic nitrosamines from impurities.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Aminomethyl Propanediol is a valuable ingredient primarily for its precise pH adjusting and buffering capabilities, demonstrating high safety with low irritancy and comedogenicity for all skin types.
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References
Sources