Laser hair removal is based on the principle of selective photothermal kinetics, through the rational regulation of laser wavelength energy pulse width, the laser will be able to penetrate the skin surface to reach the root hair follicle. The light energy is absorbed and transformed into follicle tissue heat to destroy the hair root. This also cause the hair loss of regenerative ability as well as damage the surrounding tissue, light tingling. Laser hair removal is a safe and efficient long-term hair removal technology.HPL exclusive & patented technology - Permanent and safe depilation at home - Results clinically proved: up to 82% less hair 1 month after 6 sessions- High compatibility: efficient on 5 skin types Faster - Wide applicator 4 cm2 - High repetition pulse rate: flash each 3,5 sec Safer - Exclusive skin colour sensor - Low fluence (5J:cm2) = high skin protection - Eye security system (contact sensor + protection glasses) Easier - Compact and light - Painless on all body zones: legs/armpits/bikini line/arms Do not use on the eyes. InstructionPreparation: Clean & Shave:1) Connect the adaptor, the right power indicator would turn on2) Press power button, the left power indicator would turn on3) Hold item tight against your skin, wait until the energy indicator flash