Science
Mechanism of Action
PEG-45 functions as a humectant by forming hydrogen bonds with water molecules, effectively drawing and retaining moisture within the skin, which helps to minimize transepidermal water loss and fortify the skin's natural barrier. Its emollient properties contribute to a perceptibly softer and smoother skin surface. In cosmetic formulations, it is pivotal for maintaining emulsion stability, controlling the product's viscosity, binding components, and ensuring uniform dispersion of ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEG-45 exhibits exceptional stability across a wide spectrum of environmental conditions, maintaining its integrity in aqueous solutions, diverse pH ranges, and varying temperatures. It demonstrates resistance to heat, acids, and alkalis.
Synergies
- Compatible with moisturizing agents such as cetyl alcohol and glycerin, enhancing overall hydrating effects.
Conflicts
- Potential impurities, specifically 1,4-dioxane and ethylene oxide, necessitate rigorous purification protocols during the manufacturing process to ensure product safety.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that polyethylene glycol ingredients, including PEG-45, are safe for use in cosmetics. PEG-45 generally presents low oral and dermal toxicity, induces minimal irritation to human skin, and is not recognized as a sensitizer. The CIR Panel underscores the necessity of robust purification procedures to eliminate potential trace impurities like 1,4-dioxane and ethylene oxide. The FDA has issued a positive opinion regarding PEG-45 for its use as an indirect food additive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-45 is a valuable, well-tolerated ingredient offering significant humectant and emollient benefits, alongside critical formulation stabilizing properties for diverse skincare applications.
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