Science
Mechanism of Action
It functions as a viscosity-controlling and film-forming polymer, adsorbing onto solid particles and skin surfaces to modify properties. This action provides structural integrity to formulas and facilitates phase transitions, such as transforming solid balms into oils.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This polymer exhibits pH-dependent solubility, being typically soluble in neutral to slightly alkaline conditions (pH 6-8) but insoluble at acidic pH (2-3). It also functions as a binder and dispersant in biphasic systems.
Conflicts
- Nitrosating agents
- Nitrite-containing containers
Safety
Safety Profile
The CIR Expert Panel deems this ingredient safe for cosmetic use up to 25% in leave-on products, provided it is formulated to be non-irritating. Regulatory guidelines emphasize maintaining 1,4-dioxane impurities below 1 ppm, often achieved through vacuum stripping.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This versatile polymer is a valuable formulation aid, contributing to product texture, stability, and film formation across all skin types, with a low risk of irritation or comedogenicity.
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References
Sources