Cosmetic composition, in particular hair composition, comprising: (i) one or more cationic surfactants of formula (la): in which: - R5 and R6, which may be identical or different, represent a linear or branched, saturated or unsaturated aliphatic group comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, said aliphatic group possibly comprising one or more heteroatoms such as oxygen, nitrogen, sulfur and/or halogens; or an aromatic group such as an aryl or alkaryl group, in particular a benzyl group; - R7 and R8, which may be identical or different, represent a linear or branched aliphatic group comprising from 1 to 6 carbon atoms; - Y - is an anion; (ii) one or more cationic surfactants other than the cationic surfactants of formula (la), and (iii) an oil-in-water emulsion having a particle size D50 of less than 350 nm, and comprising: - a silicone mixture comprising (i) a polydialkylsiloxane comprising trialkylsilyl end groups, having a viscosity at 25°C ranging from 40 000 to 100 000 mPa.s and (ii) an aminosilicone having a viscosity at 25°C ranging from 1000 to 15 000 mPa.s and an amine number ranging from 2 to 10 mg of KOH per gram of aminosilicone; - a surfactant mixture comprising one or more non-ionic surfactants, said mixture having an HLB ranging from 10 to 16, and - water, wherein the particle size, the viscosity, the amine number and the HLB values are determined according to the methods specified in the description. (i) one or more cationic surfactants of formula (la): in which: - R5 and R6, which may be identical or different, represent a linear or branched, saturated or unsaturated aliphatic group comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, said aliphatic group possibly comprising one or more heteroatoms such as oxygen, nitrogen, sulfur and/or halogens; or an aromatic group such as an aryl or alkaryl group, in particular a benzyl group; - R7 and R8, which may be identical or different, represent a linear or branched aliphatic group comprising from 1 to 6 carbon atoms; - Y - is an anion; - R5 and R6, which may be identical or different, represent a linear or branched, saturated or unsaturated aliphatic group comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, said aliphatic group possibly comprising one or more heteroatoms such as oxygen, nitrogen, sulfur and/or halogens; or an aromatic group such as an aryl or alkaryl group, in particular a benzyl group; - R7 and R8, which may be identical or different, represent a linear or branched aliphatic group comprising from 1 to 6 carbon atoms; - Y - is an anion; (ii) one or more cationic surfactants other than the cationic surfactants of formula (la), and (iii) an oil-in-water emulsion having a particle size D50 of less than 350 nm, and comprising: - a silicone mixture comprising (i) a polydialkylsiloxane comprising trialkylsilyl end groups, having a viscosity at 25°C ranging from 40 000 to 100 000 mPa.s and (ii) an aminosilicone having a viscosity at 25°C ranging from 1000 to 15 000 mPa.s and an amine number ranging from 2 to 10 mg of KOH per gram of aminosilicone; - a surfactant mixture comprising one or more non-ionic surfactants, said mixture having an HLB ranging from 10 to 16, and - water, - a silicone mixture comprising (i) a polydialkylsiloxane comprising trialkylsilyl end groups, having a viscosity at 25°C ranging from 40 000 to 100 000 mPa.s and (ii) an aminosilicone having a viscosity at 25°C ranging from 1000 to 15 000 mPa.s and an amine number ranging from 2 to 10 mg of KOH per gram of aminosilicone; - a surfactant mixture comprising one or more non-ionic surfactants, said mixture having an HLB ranging from 10 to 16, and - water,