Can zapping hairless areas harm you? When most hair is gone and theres only a small amount, how do they know where to zap accurately if you shave before treatment?

[fenix]

Mark the area with a pen and shave it same day. Laser is safe on skin and body so there is nothing wasteful or damaging. The less visible stubble the better because energy is wasted on the stubble instead of being transferred to the follicle.