Present invention relates to a cosmetic composition for hair and scalp obtained by mixing two compositions wherein the one is a water soluble powder and the other is an aqueous composition comprising at least one hair and scalp conditioning compound. The object of the present invention is a two-part composition for hair and scalp wherein first part is a substantially non-aqueous composition comprising at least one water soluble salt with an endothermic dissolving enthalpy of 5 kJ/mol or more and a second part is an aqueous composition comprising at least one hair conditioning compound.
