The present invention relates to a cosmetic process for treating keratin fibres, preferably human keratin fibres such as the hair, in particular for conditioning keratin fibres, using a combination of at least two different compositions, the first composition comprising one or more oxyalkylenated and preferably oxyethylenated silicones and one or more cationic surfactants and the second composition comprising water and one or more amino silicones. The invention also relates to a kit comprising the two compositions. Finally, the invention relates to a ready-to-use cosmetic composition for treating keratin fibres.
