A cosmetic composition comprises at least one cationic surfactant at least one ester of sorbitan and optionally saturated, linear or branched higher fatty acid with a number of moles of ethylene oxide = 20 and at least one non-silicone solid fatty substance, in an aqueous medium. The at least one oxyethylenated sorbitan ester and the at least one fatty substance weight are present in a ratio of 0.2 - 50. A cosmetic composition comprises at least one cationic surfactant at least one ester of sorbitan and optionally saturated, linear or branched 8-30C fatty acid with a number of moles of ethylene oxide = 20 and at least one non-silicone solid fatty substance, in an aqueous medium. The at least one oxyethylenated sorbitan ester and the at least one fatty substance weight are present in a ratio of 0.2 - 50. An independent claim is included for cosmetic process for treating keratin materials involving applying to the keratin materials the cosmetic composition and optionally rinsing off the cosmetic composition, after optionally leaving the cosmetic composition to act for a period of time.La présente invention est relative à une composition cosmétique, comprenant, dans un milieu aqueux cosmétiquement acceptable, au moins un tensioactif cationique, au moins un ester de sorbitan oxyéthyléné et au moins un corps gras solide non siliconé, dans un rapport pondéral ester de sorbitan oxyéthyléné / corps gras allant de 0,2 à 50.Ces compositions possèdent un effet conditionneur amélioré, notamment la brillance des cheveux.
