Shin-Etsu Silicones of America, Inc. (SESA) recently introduced novel silicone dispersants to address challenges in color cosmetics and mineral sunscreens. Showcased at the SCC 79th Annual Scientific Meeting, alongside featured formula examples, these dispersants enable higher pigment and mineral UV filter loadings while maintaining stability, sensory appeal and low viscosity, the company reports.
Empowering Powder Dispersion, UV Loading
KF-6115 (INCI: Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone): This polyglycerin-modified silicone dispersant reportedly promotes consistent powder dispersion in oils, improving stability and transparency. It is said to support maximum UV absorber loading with minimal viscosity, delivering a silky, lightweight feel.
Formula example: The company's SSL–315 SPF 50 Sheer Zinc Mineral Sunscreen Milk uses KF-6115 to achieve a non-whitening, clear finish on all skin tones.
Stable, Streak-free Pigment Dispersion
KP-578 (INCI: Acrylates/Ethylhexyl Acrylate/Dimethicone Methacrylate Copolymer): This silicone/acrylate polymer designed for color cosmetics prevents streaking and separation by facilitating uniform pigment dispersion; more specifically, its grafted hydrophilic groups are designed to interact with the hydrophilic groups on the pigment, per the company. Effective even at low levels, it is said to allow for high pigment loads in sheer, stable formulations.
Formula example: The company's CF-356 High Coverage Cream Foundation featuring KP-578 achieves 20% pigment loading for smooth, streak-free coverage with long-term stability.
