Science
Mechanism of Action
This ingredient operates as a surfactant, effectively reducing surface tension to facilitate the stable blending of immiscible phases, crucial for forming robust oil-in-water emulsions. Its unique double ethoxylated chain allows it to exhibit characteristics of both non-ionic and cationic surfactants, particularly in acidic environments, while also aiding in the dissolution of other components.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 In human clinical studies, PEG-15 Cocamine demonstrated no sensitizing effects at concentrations up to 2.9% within adult sunscreen and hair styling formulations involving over 400 subjects. Furthermore, it showed no photoallergic or phototoxic reactions in studies with 116 and 22 subjects, respectively.
- 02 A 6-week dermal application study in rats at a 10% dermal concentration revealed no systemic toxic effects, supporting its safety profile.
Transparency
Dusting Analysis
As a surfactant and emulsifier, PEG-15 Cocamine's function is structural within a formulation rather than providing direct active skin benefits that would necessitate a dusting analysis for efficacy.
The Formula
Formulation
Stability
PEG-15 Cocamine exhibits excellent stability and efficacy across both acidic and alkaline pH ranges and maintains performance even in the presence of hard water, offering significant formulation flexibility.
Safety
Safety Profile
The CIR Expert Panel deems PEG-15 Cocamine safe for use in cosmetic formulations, provided products are designed to be non-irritating. A crucial consideration is the potential for 1,4-dioxane and ethylene oxide impurities, by-products of the ethoxylation process, necessitating rigorous purification procedures. While some PEG Cocamine ingredients have shown mild to moderate irritancy, specific studies on PEG-15 Cocamine indicate low irritancy and non-mutagenic properties. Formulators should exercise caution when incorporating it into products intended for use on compromised or damaged skin, especially when approaching the 3% maximum concentration for leave-on dermal exposure.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-15 Cocamine is a valuable formulating aid, expertly stabilizing emulsions and solubilizing diverse ingredients, with a strong safety profile at concentrations up to 3% when properly purified and formulated to be non-irritating.
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