Stabilizer
QUATERNIUM-90 SEPIOLITE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A modified clay mineral used to thicken and stabilize cosmetic products — combines a quaternary compound with natural sepiolite clay for better texture control.
Quaternium-90 Sepiolite is a hybrid ingredient formed by reacting Quaternium-90 (a quaternary ammonium compound) with sepiolite, a natural magnesium silicate clay mineral. It functions as an emulsion stabilizer and viscosity controller. Sepiolite's needle-like crystal structure provides excellent thickening and suspension properties, while the quaternary modification improves compatibility with cosmetic formulations. No GHS hazards or specific EU restrictions. Limited standalone safety data, but the individual components (quaternary surfactants and sepiolite clay) have established safety profiles in cosmetics.
Function
Skin benefits
- Improves product texture and stability
- Provides suspension properties for active ingredients
Known concerns
- Limited specific safety data for this hybrid ingredient
- Quaternary ammonium compounds can irritate sensitive skin
- Sepiolite fibers may pose inhalation concerns in powder form
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related stabilizers
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.