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.Una composición cosmética para su aplicación a un sustrato biológico donde dicha composición comprende: (a) un primer y un segundo grupo de partículas de gel fractal de uno cualquiera de entre sílices ahumados, incluidos los sílices ahumados hidrófilos e hidrófobos, sílice coloidal, alúmina ahumada, óxido de titanio ahumado, óxido de zirconio ahumado, óxido de cerio ahumado, óxido de zinc ahumado, óxido de indio-estaño ahumado o mezclas de los mismos, teniendo los miembros de un grupo cargas superficiales opuestas respecto a los miembros del otro grupo a un pH inferior a 7-8, teniendo cada partícula fractal un índice refractivo, y (b) un polímero seleccionado del grupo conformado por Bis(trimetilsilil)silicilato, feniltrimeticona, PEG 12 D
