At its core, laser hair removal methods rely on highly concentrated light or energy to target and damage hair follicles. 

The pigment in the hair follicles absorbs this light or energy, which is then converted into heat that destroys the follicles, inhibiting further hair growth. 

It's a process that's both precise and efficient, making it a game-changer in the world of hair removal. 

Laser treatment works by disabling the hair that is in the active growth phase at the time of treatment. 

Other hairs will enter this active growth phase at different times, which is why additional treatments are necessary to disable all hair follicles in a given area of the body.