Phototherapeutic apparatus for medical purposes; Phototherapeutic apparatus for medical purposes, namely, a LED (light-emitting diode) light source for medical and aesthetic skin treatments; Red light therapy apparatus and instruments for use in treating scalp treatment; Phototherapeutic apparatus for the treatment of jaundice; Nasal devices utilizing light therapy to provide relief from (specify condition, e.g., colds, rhinitis, sinusitis, etc.); Red light therapy apparatus and instruments for use in treating {indicate disease or condition treated, e.g.. arthritis, colds, pain, etc.); 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; Apparatus using a light emitting diode (LED) for performing aesthetic facial treatment procedures; Medical apparatus for measuring skin hydration; Electronic light therapy apparatus for the skin; Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays