Portable SHR IPL Laser Hair Removal Machine is based on selective dynamics of light and heat. The laser wavelength 650~950nm goes through the skin surface to reach the root of hair follicles; light can be absorbed and converted into heat damage hair follicle tissue, so that hair loss regeneration without injury surrounding tissue. The filter remove the wavelength below 650nm and above 950nm (which brings much pain to skin), so customers will feel pain less.