Cosmetic apparatus using ultrasound for performing aesthetic skin treatment procedures; Cosmetic apparatus, namely, light based devices providing mainly pulsed light for performing non-ablative aesthetic skin treatment procedures; Electrically-powered apparatus for treating skin by applying low level light and sonic vibrations to the skin; Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; Electronic light therapy apparatus for the skin; Electronic stimulation apparatus for nerves, skin and muscles for physical therapy purposes; Face masks for use by health care providers; Lasers for the cosmetic treatment of the face and skin; Light emitting devices, namely, lamps and LED devices for treatment of a variety of skin conditions; Medical apparatus for measuring skin hydration; Microdermabrasion apparatus; Phototherapeutic apparatus for medical purposes; Phototherapeutic apparatus for medical purposes, namely, a LED (light-emitting diode) light source for medical and aesthetic skin treatments; Ultraviolet lamps for medical purposes