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; Laser therapy helmets for treating alopecia; Light-based medical devices, namely, a light emitting diode (LED) device for increasing the human body's own production of collagen; Light emitting devices, namely, lamps and LED devices for treatment of a variety of skin conditions; Light emitting diode (LED) apparatus for lighting, incorporated into medical instruments; Light emitting diode (LED) devices for energy-efficient replacement of standard tungsten-filament lighting incorporated into hand-held medical instruments; Medical devices for nonsurgical cosmetic treatments; Phototherapeutic apparatus for medical purposes; Phototherapeutic apparatus for medical purposes, namely, a LED (light-emitting diode) light source for medical and aesthetic skin treatments; Sensory light therapy unit