Improve skin and promote hair growth:Strong penetration, penetrate subcutaneous fat to wake up the hair follicles, and reproduce the richness and toughness of the hair. Enhance and improve hair follicle blood circulation and metabolism, promote hair growth. Product upgrade uses 215 three-in-one lamp beads, consisting of three 650nm or three 850nm small lamp beads. (172 660nm red lights and 43 850nm infrared). Can regulate oil secretion, nourish hair follicles, care scalp, create a good hair growth environment. Upgraded controller is simple and beautiful in appearance and easy to operate. The controller can adjust the brightness of the light source in 1-5 gears, and long press the controller to turn on the flickering function, which can meet your different needs. With a timing device of 10-90min, you can relax and fall asleep after setting the time without worrying about the instrument working for a long time. Red light device uses combo red 660nm and Infrared 850nm leds which is chosen to give the ideal wavelengths found in the scientific research of the last three decades. Low light decay and long service life. The product uses skin-friendly materials and is designed to be a foldable hair growth treatment device. It is portable and lightweight, with a gross weight of only 200 grams, which is convenient for you to carry on travel without any burden.