Science
Mechanism of Action
Functioning primarily as a rheology additive, Quaternium-90 Sepiolite stabilizes complex mixtures like emulsions by preventing the separation of immiscible liquids. It precisely controls product viscosity, effectively thickening oil-based formulations to achieve desired consistencies and a more luxurious feel. This ingredient also contributes to a matte finish, efficiently suspends powdered pigments, and improves the adhesion and wear time of color cosmetics, exhibiting beneficial shear-thinning properties.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
This ingredient primarily serves as a foundational formulation additive to enhance product texture and stability, rather than providing direct active skin benefits. Consequently, the phenomenon of 'dusting' (exaggerated claims for active efficacy) is not applicable to its functional role.
The Formula
Formulation
Stability
Quaternium-90 Sepiolite demonstrates a substantial shelf life of up to 36 months when integrated into specific mixtures. It exhibits high insolubility in water (water solubility < 0.04 g/L) and is optimally utilized with low- to medium-polar organic liquids such as cyclomethicone, dimethicone, or paraffinum liquidum. Effective activation and uniform dispersion necessitate moderate shear mixing for approximately 10 minutes. Over-concentration may lead to a drying sensation, particularly on mucous membranes, and has the potential to impart a grey color to the final product.
Synergies
- Low- to medium-polar organic liquids (e.g., cyclomethicone, dimethicone, paraffinum liquidum, isododecane, castor oil)
Conflicts
- High concentrations may induce a drying sensation
- High concentrations may impart a grey discoloration
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Quaternium-90 Sepiolite is safe for topical cosmetic use at concentrations up to 3.2%, provided it is formulated to be non-irritating. It is listed in the FDA Global Substance Registration System (GSRS). Data regarding its topical application during pregnancy or breastfeeding are currently insufficient; therefore, consultation with a healthcare professional is recommended.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Quaternium-90 Sepiolite is a valuable rheology modifier and emulsion stabilizer, crucial for enhancing product stability, texture, and cosmetic performance, with a low risk of irritation at its recommended usage concentration of up to 3.2%.
Related
Similar Ingredients
Finding similar ingredients…