The present invention relates to a composition comprising highly dispersed silica and at least one highly dispersed titanium acid for use as a medicament. The invention further relates to a composition comprising highly dispersed silica and at least one highly dispersed titanium acid for use in the prevention or treatment of skin mycosis. The invention also relates to a composition comprising highly dispersed silica and at least one highly dispersed titanium acid for use in the prevention of fermentation of sweat. Furthermore, the invention relates to a method of activating a composition comprising highly dispersed silica and at least one highly dispersed titanium acid, wherein the composition is subjected to activation by an aqueous solution of hydrogen peroxide wherein the aqueous solution of hydrogen peroxide preferably is a solution of preferably 0.1 to 10 % (vol/vol), more preferably 3 % (vol/vol). The invention also relates to a kit comprising a) a composition comprising highly dispersed silica and at least one highly dispersed titanium acid, and b) an aqueous solution of hydrogen peroxide, wherein the aqueous solution of hydrogen peroxide preferably is a solution of preferably 0.1 to 10 % (vol/vol), more preferably 3 % (vol/vol), and c) optionally, instructions for use.La présente invention concerne une composition, comprenant de la silice hautement dispersée et au moins un acide de titane hautement dispersé, destinée à être utilisée en tant que médicament. L'invention concerne en outre une composition, comprenant de la silice hautement dispersée et au moins un acide de titane hautement dispersé, destinée à être utilisée dans la prévention ou le traitement de mycoses de la peau. L'invention concerne également une composition, comprenant de la silice hautement dispersée et au moins un acide de titane hautement dispersé, destinée à être utilisée dans la prévention de la fermentation de la sueur. En outre, l'invention concerne un procédé d'activation d'une compo