Abstract: The present invention relates to a cosmetic composition comprising: (i) cationic surfactants of formula (Ia): in which: R5 and R6 represent a linear or branched, saturated or unsaturated C8-C30 aliphatic group optionally comprising heteroatoms; or else an aromatic group, R7 and R8 represent a linear or branched C1-C6 aliphatic group, and Y? is an anion; (ii) additional cationic surfactants, different from the cationic surfactants of formula (Ia), and (iii) an oil-in-water emulsion having a particle size D50 of less than 350 nm, comprising a polydialkylsiloxane comprising trialkylsilyl end groups, an aminosilicone and a non-ionic surfactant having an HLB ranging from 10 to 16. The invention also relates to a cosmetic process for treating, more particularly for conditioning, the hair.

Abstract: The present invention relates to a cosmetic aerosol-pressurized composition for treating keratin substances, in particular the hair, comprising (a) a fluid comprising at least one fixing polymer and at least 5% by weight, relative to the total weight of the pressurized composition, of a non-volatile aryl silicone and (b) at least one propellant, as well as to a process for treating keratin substances using this composition.

Abstract: The present invention relates to a cosmetic composition for treating keratin substances, in particular the hair, comprising at least one fixing polymer, at least 5% by weight of a non-volatile aryl silicone and at least one volatile silicone, as well as to a process for treating keratin substances using this composition.