Cosmetic composition containing a novel gel based on fractal particles with improved optical properties

摘要

A cosmetic composition for application to a biological substrate wherein said composition comprises: (a) a first and a second group of fractal gel particles of any one of among smoked silicas, including hydrophilic and hydrophobic smoked silicas, colloidal silica, smoked alumina , smoked titanium oxide, smoked zirconium oxide, smoked cerium oxide, smoked zinc oxide, smoked indium tin oxide or mixtures thereof, the members of one group having opposite surface charges relative to the members of the other group a a pH of less than 7-8, each fractal particle having a refractive index, and (b) a polymer selected from the group consisting of Bis (trimethylsilyl) silicylate, phenyltrimethicone, PEG 12 Dimethicone, propylene glycol dicaprilate, glycerin, di (ethylene) glycol , glycerol, and mixtures thereof, which has a refractive index coinciding with the refractive index of one of the fractal gel particles, the refractive index of the fractal gel particle within 0.05 or less of the refractive index of the polymer with matching refractive index, where the dispersions of the first type of particle have a zeta potential value of +10 mV to +50 mV and the dispersions of the second Particle type have a zeta potential value of -10 mV to -50 mV.