Science
Mechanism of Action
Functioning primarily as a humectant, PEG-135 actively draws and binds water molecules, creating a hydrating film that minimizes trans-epidermal water loss and enhances skin moisturization. Beyond hydration, its solvent properties facilitate the dissolution of diverse ingredients, while its emulsifying and surfactant capabilities ensure homogeneous blends and improved cleansing efficacy. It additionally optimizes product texture, stability, and the penetration of active compounds.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient exhibits robust stability across a wide range of pH, heat, and alkali conditions. Aqueous solutions remain stable at ambient temperatures without hydrolysis. While it can be processed in warm water (80-90°C), prolonged exposure to warmth, light, and oxygen can accelerate degradation, resulting in chemical alterations and a decrease in pH. For optimal long-term stability, storage in frozen (-20°C) or refrigerated (4°C) conditions, shielded from light and oxygen, is recommended.
Conflicts
- Phenol
- Sorbitol
- Tannic acid
- Salicylic acid
- Penicillin
- Bacitracin
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed PEG-135, along with other polyethylene glycol ingredients, as safe for use in cosmetic and personal care products. Importantly, higher molecular weight PEGs (including PEG-135) are not systemically absorbed through intact skin, and the previous caution against use on compromised skin has been withdrawn. While historical concerns regarding manufacturing impurities like ethylene oxide and 1,4-dioxane exist, reputable suppliers ensure these are tightly controlled in the final ingredient to meet stringent safety standards.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-135 is a valuable, multi-functional ingredient that enhances formulation characteristics and contributes to skin hydration, deemed safe for use in precision skincare.
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