A process for making an anhydrous laundry liquid detergent base composition comprising detersive surfactant, the process comprising the steps of: a) providing a pre-neutralized sulphate detersive surfactant syrup wherein at least 50% of the sulphate detersive surfactant is pre-neutralized with an organic neutralizing agent; b) adding a neutralizing agent to the sulphate detersive surfactant syrup; and c) adding a sulphonic detersive surfactant in acid form to the mixture resulting from step b).