Abstract: Disinfectant compositions are disclosed which provide a durable residual antimicrobial benefit to surfaces treated with such compositions. The disinfectant compositions include a biocidal agent, an amphoteric copolymer, and other functional agents. Methods of making and using the disinfectant compositions are further provided.

Abstract: Skin treatment apparatus comprising an energy applicator structure configured to establish heating or ablation at a predetermined and controllable (i.e. selectable) depth below a surface of skin tissue with which it is in contact. The applicator structure may receive a cooling medium and microwave frequency electromagnetic energy, which provide a combined treatment effect that results in heating or ablation in a zone beneath the skin surface. The applicator may be a waveguide (e.g. waveguide horn antenna) with internal shielding configured to provide a substantially uniform heating effect. The applicator may include a thermal camera to monitor treatment.