Science
Mechanism of Action
As a multifunctional PEG derivative, PEG-8 BEHENATE is engineered with both a hydrophilic (water-loving) polyethylene glycol chain and a lipophilic (oil-loving) behenate fatty acid portion. This dual polarity enables it to reduce interfacial tension between oil and water, effectively stabilizing emulsions and preventing phase separation. Furthermore, the PEG component imparts humectant properties, drawing and retaining moisture within the skin, and functions as a solvent to optimize the delivery and penetration of other active ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal performance for PEG-8 BEHENATE is observed within a pH range of 4.0 to 7.5, a range inferred from its PEG-8 component. It is highly effective in stabilizing both oil-in-water and water-in-oil emulsions. This ingredient also contributes to solubilizing sparingly water-soluble components into aqueous systems and helps prevent formula dehydration, maintaining product integrity.
Safety
Safety Profile
While a dedicated CIR report for PEG-8 BEHENATE was not identified, the broader category of PEGs and their derivatives has been deemed safe for cosmetic use by the CIR Expert Panel, even at concentrations up to 85%. In 2010, the CIR Panel removed previous caveats concerning PEG use on damaged skin. However, some sources still advise caution and avoidance on severely broken or irritated skin, citing a theoretical potential for systemic absorption, particularly observed in burn patients. Formulators must ensure that PEG derivatives minimize impurities such as ethylene oxide and 1,4-dioxane.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-8 BEHENATE is a valuable ingredient for its robust functional roles as an emulsifier, surfactant, humectant, and solvent, contributing to stable formulations and generally well-tolerated across various skin types.
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