A light and flexible cap lined with 272 true laser diodes to thoroughly cover the entire scalp area. The product design allows for maximum laser light coverage without any manual movement. The product illuminates the hair follicles with monochromatic red laser light at a finely-tuned wavelength and intensity. This is based on US FDA approved LLLT treatment which works alone also, but gives great results with the topical treatments and medication. DHI Laser cap is not just a product but an entire hair loss treatment in the comfort of your home. It stimulates skin tissues, encourages thicker hair follicles, heals damaged cells, helps with treating hair thinning, reverses hair loss, and enhances cell absorption & protein synthesis. HOW LASER LIGHT THERAPY PROMOTES HAIR GROWTH? Laser wave technology uses the biological effects of laser on human skin to care for abnormal hair loss on the head. Its principle is to make a laser of a specific wavelength penetrate into the cells under the head (hair roots and hairs), the deepest layer, to accelerate blood circulation, regulate endocrine, and improve hair quality.