This Laser + LED Comb combine with red light and blue light and laser Light and Virbration. 4 in 1, more powerful and more useful than any other cheap comb. With factory red and blue Light technology and Laser Light therapy, high quality of the comb. 18 Number of beams, good for point treatment and full scalp coverage. This targeted light treatment delivers nourishing red/ blue/laser light energy directly to your hair follicles to reverse the thinning process and regrow your hair. Delivers therapeutic light energy to stimulate hair follicles, reverse thinning, restore your hair?s natural growth cycle and promote hair growth 5-10 Minutes treatment time, every day treatment Cordless lightweight, plug and chargeable battery included.