Science
Mechanism of Action
As a surfactant, SODIUM C12-13 ALKYL SULFATE decreases the surface tension of liquids, facilitating the mixing of immiscible substances like oil and water. This action allows it to effectively cleanse by aiding water in dissolving and removing impurities, generate foam, and stabilize oil-in-water emulsions.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
SODIUM C12-13 ALKYL SULFATE is a primary functional ingredient, typically used at significant percentages to achieve its surfactant, cleansing, and foaming properties, thus it is not commonly associated with 'dusting'.
The Formula
Formulation
Stability
Aqueous solutions are mildly alkaline (pH 7-9). The ingredient demonstrates stability in alkaline, weak acid, and hard water environments, but degrades in strong acidic conditions and at high temperatures. It is known to enhance viscosity and is frequently co-formulated with other surfactants to optimize cleansing performance, foam generation, and skin compatibility.
Synergies
- other surfactants (for optimized cleansing, foaming, and skin tolerance)
Conflicts
- strong acids
- high temperatures
Safety
Safety Profile
The CIR Expert Panel deems ethoxylated alkyl sulfates, including related ingredients like Sodium C12-13 Pareth Sulfate, safe when formulated to be non-irritating. Typical usage in soaps and shampoos ranges from 0.1% to 29%. For sensitive applications, such as children’s cleaning products, concentrations should not exceed 10% to mitigate irritation risk. While trace levels of 1,4-dioxane, a manufacturing byproduct, may be present, the U.S. FDA indicates that observed levels in cosmetics do not pose a consumer hazard.
Your Skin
Skin Compatibility
Our Assessment
Verdict
SODIUM C12-13 ALKYL SULFATE is a valuable surfactant for effective cleansing and foaming, provided formulations adhere to recommended concentration limits and pH parameters to ensure optimal skin compatibility.
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