Science
Mechanism of Action
This ingredient functions by reducing water's surface tension, allowing oil and dirt to be encapsulated in micelles. Its ethoxylated structure, with 5 moles of ethylene oxide, increases molecular size, which helps minimize skin penetration and irritation.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Studies on shampoos with up to 31% Ammonium Lauryl Sulfate/Ammonium Laureth Sulfate reported minimal health complaints.
- 02 Ethoxylated surfactants are less irritating than non-ethoxylated counterparts due to larger molecular size and reduced protein-binding.
Transparency
Dusting Analysis
No specific data available on dusting for this ingredient.
The Formula
Formulation
Stability
Stable within a pH range of 5.0-7.0, but may decompose in highly acidic conditions (pH < 5.0) or temperatures above 40°C. Exhibits excellent hard water resistance.
Conflicts
- Cationic surfactants (forms insoluble complexes)
- Strongly acidic environments
- Strong alkalis
Safety
Safety Profile
The CIR Expert Panel deems it safe for rinse-off products. For leave-on applications, concentrations should typically not exceed 1% due to potential irritation; manufacturers must also mitigate 1,4-dioxane contamination risks.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ammonium Laureth-5 Sulfate is a valuable cleansing agent, particularly in rinse-off formulations, offering effective cleansing with a low risk of irritation.
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References
Sources