Science
Mechanism of Action
Derived from stearyl alcohol through an ethoxylation process, STEARETH-27 primarily acts to reduce the interfacial tension between immiscible liquids, ensuring stable emulsions and preventing phase separation in skincare products. As a surfactant, it further lowers the surface tension of formulations, promoting uniform application and contributing to the gentle removal of surface impurities from the skin. The '27' in its name signifies the average number of ethylene oxide units, which dictates its specific hydrophilic-lipophilic balance and performance.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
There is no indication in the research data that STEARETH-27 is frequently misunderstood or subject to widespread misinformation, often referred to as 'dusting', within the skincare community. Its established roles as an emulsifier and surfactant are well-documented.
The Formula
Formulation
Stability
Steareth ingredients, including STEARETH-27, are known to provide stable emulsions across a wide pH range, performing consistently in both highly acidic and alkaline formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that the entire group of Steareth ingredients, including STEARETH-27, is safe for use in cosmetics. This conclusion was reaffirmed, specifically for Steareth-2, at concentrations up to 10%. Concerns regarding the potential presence of 1,4-dioxane, a by-product of ethoxylation, are effectively addressed through industry-standard purification processes. Studies on Steareth-2 in water indicated it is neither a primary irritant nor a sensitizer to human skin.
Your Skin
Skin Compatibility
Our Assessment
Verdict
STEARETH-27 is a valuable functional ingredient that effectively stabilizes formulations and enhances product application, supported by a strong safety profile.
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