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, muscles, and skin for physical therapy purposes; Facial toning machines for cosmetic use; Medical apparatus for measuring skin hydration; Relaxation therapy apparatus using light, sound, and vibration; Skin care analyzers and light therapy equipment, namely, a black-light blue lamp unit for use in identification of a variety of skin conditions