Science
Mechanism of Action
This ingredient effectively stabilizes emulsions by acting as an emulsifier, creating a uniform blend of immiscible oil and water components and preventing their separation over time. As a surfactant, it lowers the surface tension of liquids, facilitating better wetting, spreading, and even distribution of active ingredients on the skin. It contributes to cleansing by emulsifying oils and impurities, allowing them to be rinsed away easily. Additionally, Steareth-100 can solubilize substances otherwise insoluble in water and functions as a gelling agent, enhancing product viscosity and imparting a smooth, creamy feel.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
In its raw form, Steareth-100 appears as a white to off-white waxy solid, with a melting point ranging between 50°C and 60°C. For optimal stability, it requires storage in a dry, cool place, protected from moisture.
Safety
Safety Profile
The CIR Expert Panel has affirmed Steareth ingredients, including Steareth-100, are safe when formulated to be non-irritating. There is a potential for trace amounts of 1,4-dioxane, a byproduct of ethoxylation, which can be managed through purification processes. It is approved for cosmetic use under European Union regulations and by the FDA as an indirect food additive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Steareth-100 is a valuable formulation ingredient, crucial for achieving stable emulsions, desirable product textures, and effective cleansing, with a low irritancy profile and broad utility in many cosmetic categories.
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References
Sources