Science
Mechanism of Action
As a polyethylene glycol (PEG) diester, PEG-4 TRIMETHYLOLPROPANE DISTEARATE functions primarily as an emulsifier, facilitating the homogeneous blending of immiscible oil and water phases within a formulation and preventing their separation over time. It also acts as an effective viscosity-controlling agent, contributing to the desired rheology and thickness of cosmetic products. Furthermore, it may offer secondary benefits as a mild skin conditioner or emollient.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This low molecular weight PEG derivative exhibits water solubility, a characteristic of shorter-chain polyethylene glycols. For optimal dissolution, particularly with related distearates, heating above the ingredient's melting point (e.g., 52-57°C for similar compounds like PEG-150 Distearate) may be necessary, and its solubility can be significantly enhanced in the presence of co-surfactants.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEG diesters, including PEG-4 Distearate, are safe for use in cosmetics, provided they are formulated to be non-irritating. Previous concerns regarding PEGs acting as penetration enhancers, particularly on compromised skin, have been largely mitigated for related PEG derivatives. Reputable suppliers have diligently removed trace impurities such as ethylene oxide and 1,4-dioxane from PEG-based ingredients, ensuring product integrity. This ingredient was reported in 283 FDA-submitted cosmetic formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-4 TRIMETHYLOLPROPANE DISTEARATE is a valuable ingredient for enhancing formulation stability and texture, providing safe and effective emulsifying and viscosity control properties across various skin types.
Related
Similar Ingredients
Finding similar ingredients…