●IPL hair remover releases laser beam,the melanin in the skin absorbs energy of laser beam and transfers the transient heat to the hair follicle. Then hair follicle will enter dormancy period,whichmakes the hair stop growing by stagers and fall off stay hairless by periodic use ●long press the “flashing” button to enter auto mode,no need to press button if in “auto mode”, long press again to exit “auto mode” ●protective glasses must be worn to protect the eyes when operating ●LCD screen can indicate the level ●Flash Window have to fully coverd by skin