Science
Mechanism of Action
On the skin, PEG-2M acts as a humectant, drawing and retaining moisture to deliver sustained hydration and reduce transepidermal water loss through barrier-forming properties. It functions as an emollient and lubricant, enhancing skin softness and smoothness. In formulations, it helps bind ingredients, stabilizes emulsions, increases the viscosity of aqueous solutions, and acts as a solvent to solubilize other active ingredients, fragrances, and colorants, thereby potentially boosting their delivery and efficacy.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyethylene glycols, including PEG-2M, exhibit high chemical stability and are well-tolerated by the skin. They are not susceptible to microbial degradation, generally eliminating the need for added preservatives for the ingredient itself.
Conflicts
- In parenteral drug formulations, PEG has been observed to degrade when stored in polyvinylchloride (PVC) IV tubing, attributed to an oxidation-dominated mechanism involving PEG auto-oxidation and dehydrochlorination of the PVC.
Safety
Safety Profile
The CIR Expert Panel has deemed PEG ingredients, including PEG-2M, safe for use in cosmetic products. They are minimally irritating to human skin and have shown no evidence of sensitizing, mutagenic, or carcinogenic properties. Absorption through intact skin is minimal; however, it significantly increases when skin is severely damaged (e.g., in cases of second or third-degree burns). The potential presence of trace amounts of 1,4-dioxane, a by-product of ethoxylation, can be effectively managed through purification processes.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-2M is a valuable, multifunctional ingredient that enhances product formulation stability and texture while providing direct skin benefits such as hydration and emollience, compatible with all skin types.
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References
Sources