Science
Mechanism of Action
This ingredient operates as a humectant by drawing and retaining moisture within the skin, supporting hydration. As a solvent, it facilitates the uniform dispersion and dissolution of other compounds, thereby improving their bioavailability and absorption into the skin. Its emulsifying properties are critical for forming and stabilizing oil-in-water or water-in-oil emulsions, ensuring product integrity. Its inherent hydrophilicity also renders it an effective water-soluble base for precise viscosity adjustment.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 General polyethylene glycol (PEG) derivatives, including those related to METHOXY PEG-25, have been found to be non-irritating and non-sensitizing in animal studies and human clinical tests at concentrations up to 25%.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
METHOXY PEG-25 demonstrates robust chemical stability and is resistant to hydrolysis. It maintains solubility in both acidic and basic environments, though very high concentrations may exhibit reduced solubility. Optimal long-term stability for general PEGs is achieved when stored frozen (-20 °C) or refrigerated (4 °C); at room temperature, degradation can be minimized by oxygen exclusion from containers and protection from light.
Conflicts
- strong oxidizing agents
- strong acids
- strong bases
- aluminum (potential corrosion and hydrogen gas release)
- 70% perchloric acid (risk of violent decomposition)
- mild steel/copper (potential discoloration)
- conditions promoting peroxide formation (e.g., distillation to dryness)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed methoxypolyethylene glycols, including METHOXY PEG-25 (CAS 9004-74-4), concluding their safety for cosmetic use under current conditions. Manufacturers are advised to diligently minimize impurities such as ethylene oxide and 1,4-dioxane. While generally safe for topical application, it is recommended to avoid use on compromised or damaged skin.
Your Skin
Skin Compatibility
Our Assessment
Verdict
METHOXY PEG-25 is a valuable multifunctional ingredient, enhancing ingredient absorption and formulation stability while providing humectant benefits with a low risk of irritation across all skin types.
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