Cosmetic compositions comprising water, at least one estolide ester compound of Formula (3) wherein n is from 1 to 10, preferably from 2 to 8, and R is selected from branched or linear C3-20-alkyl, and B) optionally at least one surfactant component B, C) optionally at least one thickener component C, D) optionally at least one hair conditioning component D, and E) optionally at least one further component E, different to A to D, can be used for improved hair treatment.
