Science
Mechanism of Action
This molecule utilizes a hybrid structure containing a non-ionic polyethylene glycol (PEG) chain and an anionic carboxylic acid group. This configuration lowers the Critical Micelle Concentration (CMC) of a formulation, effectively preventing harsh surfactant monomers from penetrating the skin barrier while ensuring the product remains stable in hard water or high-electrolyte environments.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 In Red Blood Cell (RBC) assays at 1.0%, the ingredient yielded a Zein Value under 200, confirming its classification as a non-irritant compared to standard sulfates.
- 02 Clinical data indicates that concentrations between 5.0% and 15.0% significantly reduce the irritation potential of Sodium Laureth Sulfate (SLES) while enhancing foam creaminess.
Transparency
Dusting Analysis
While it can be used at low levels as an emulsifier, its primary benefit as a mildness-enhancing 'crypto-anionic' surfactant is typically realized at concentrations of 1.0% or higher.
The Formula
Formulation
Stability
Highly resistant to hydrolysis across a wide pH range. It maintains exceptional performance in hard water where traditional anionic surfactants often fail.
Synergies
- Sodium Laureth Sulfate (reduces irritation potential)
- High-electrolyte/salt systems
Conflicts
- Strong cationic polymers at low pH (risk of complexation)
- Highly acidic conditions (may reduce solubility of the acid form)
Safety
Safety Profile
Reviewed and cleared by the CIR Expert Panel for both rinse-off and leave-on cosmetic applications within the Alkyl Ether Carboxylic Acids group.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential ingredient for creating high-foaming yet non-stripping cleansers suitable for compromised or sensitive skin barriers.
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