Science
Mechanism of Action
This ingredient functions primarily as a solubilizer and viscosity control agent within formulations. As a potent humectant, it effectively binds water, preventing both product formulas from drying out and supporting skin hydration. It is characterized by its dual solubility in both water and polar oils, facilitating the dispersion and emulsification of diverse cosmetic components. Furthermore, it acts as a skin conditioning agent and surfactant, and certain alkyl PEG/PPG ethers, including this one, have demonstrated the capacity to enhance the percutaneous penetration of other substances.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEG/PPG-35/40 Dimethyl Ether exhibits stability across both acidic and alkaline conditions. However, as an alkylene oxide derivative, it is susceptible to oxidative degradation. This process can be accelerated by factors such as aeration, UV light exposure, and elevated temperatures, potentially resulting in product discoloration, a decrease in pH, and an increase in acidity.
Safety
Safety Profile
The CIR Expert Panel has evaluated PEG/PPG-35/40 Dimethyl Ether, along with 130 other alkyl PEG/PPG ethers, affirming their safety in current cosmetic applications and concentrations, provided formulations are non-irritating. The maximum reported concentration for leave-on products is 5%. Caution is advised when formulating with this ingredient in combination with active ingredients whose safety profiles are predicated on limited dermal absorption, due to its established potential as a penetration enhancer.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG/PPG-35/40 Dimethyl Ether is a valuable multifunctional ingredient, offering enhanced solubilization, viscosity control, and significant humectant benefits for skin hydration, particularly beneficial for dry skin types.
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References
Sources