The instant disclosure relates to hair-treatment compositions. The hair-treatment compositions typically include: one or more polyurethane latex polymers; one or more thickening agents; one or more water-soluble solvents; and water. Additional components such as silicones, emulsifiers, surfactants, cationic polymers, etc., can also be included. The instant disclosure also relates to kits that include the hair-treatment compositions and to methods for treating hair with the hair-treatment compositions.