Science
Mechanism of Action
This anionic surfactant reduces water's surface tension, enabling it to emulsify and lift dirt and oils. Its large micelle size of approximately 33.5 Å prevents penetration of the stratum corneum, preserving the skin's lipid barrier.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 A 2.9% concentration was found to be significantly milder than Sodium Lauryl Sulfate in clinical irritancy testing.
- 02 Local Lymph Node Assays (LLNA) up to 50% concentration showed no skin sensitization.
Transparency
Dusting Analysis
No specific data on dusting behavior is available for Ammonium Cocoyl Isethionate.
The Formula
Formulation
Stability
More water-soluble than SCI, it is prone to hydrolysis at extreme pH (below 5 or above 8), which can affect foaming or lead to recrystallization.
Conflicts
- Cationic polymers (may cause precipitation at high concentrations)
- Strongly acidic environments (causes hydrolysis)
- Strongly alkaline environments
Safety
Safety Profile
The CIR concludes it is safe when formulated to be non-irritating. Rinse-off product safety was updated to 53% based on current practices.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ammonium Cocoyl Isethionate is a valuable, mild cleansing agent, highly compatible with various skin types, making it ideal for gentle yet effective formulations.
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