Science
Mechanism of Action
This ingredient acts as a versatile surfactant, aiding in skin cleansing by reducing surface tension. As an emulsifier, it facilitates the stable dispersion of oil and water phases, ensuring product consistency and preventing separation. Beyond formulation stability, PEG-5 Stearate supports the skin's protective barrier, enhances moisture retention, and contributes to a softer skin feel, benefiting drier or mature complexions.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEG-5 Stearate is highly soluble in both water and oil, making it adaptable across various formulations. It provides exceptional thermal stability to ointment bases, remaining stable across a range of temperatures, and has been observed to maintain emulsion stability for over two years, preventing product stratification.
Conflicts
- General PEG compounds may exhibit incompatibilities with active pharmaceutical ingredients such as ibuprofen and aspirin, potentially leading to degradation products.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG Stearates, including PEG-5 Stearate, safe for cosmetic use within established practices and concentrations. Clinical assessments indicate no irritant or sensitizing effects even at concentrations up to 25%. While 1,4-dioxane can be an impurity in PEGs, the cosmetic industry implements rigorous purification steps to mitigate this. However, it is noteworthy that some PEG compounds are advised against for compromised or damaged skin due to potential irritation concerns.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-5 Stearate is a valuable ingredient, particularly for dry skin formulations, offering robust emulsion stabilization and mild cleansing properties with a low safety risk at typical concentrations.
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