Science
Mechanism of Action
As a non-ionic surfactant, Isosteareth-2 facilitates the formation and stability of emulsions by creating a finely dispersed mixture of oil and water components. Its unique chemical structure, featuring hydrophilic polyoxyethylene segments and a stabilizing isostearyl alcohol moiety, bridges immiscible phases. Beyond emulsification, it acts as an effective cleansing agent, boosting foam quality in wash-off products while respecting the skin's natural lipid barrier.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Effectively stabilizes water-in-oil emulsions in creams, sunscreens, and makeup bases at concentrations between 0.5% and 2%.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Specific optimal pH range for stability was not identified in the research data.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed Isosteareth-2, alongside other alkyl PEG ethers, safe under current usage concentrations, provided products are formulated to be non-irritating. It is certified safe at concentrations up to 1% in leave-on formulations and 2% in rinse-off products. No specific SCCS status was found, and while listed in the FDA GSRS, it lacks specific 'approved' or 'restricted' status details.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isosteareth-2 is a valuable formulation component, offering reliable emulsion stabilization and gentle cleansing properties across a broad range of product types, with a favorable safety and skin compatibility profile.
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References
Sources