The instant disclosure relates to essentially anhydrous hair-treatment compositions. The anhydrous hair-treatment compositions typically include: one or more polyurethane latex polymers； one or more bis-urea derivatives； and one or more solvents. Additional components such as silicones, auxiliary agents, etc., can also be included. The instant disclosure also relates to kits that include the essentially anhydrous hair-treatment compositions and to methods for treating hair with the essentially anhydrous hair-treatment compositions.
