Here are a few reasons why.
Bits of hair may be left out during the laser process.
As long hair follicles demand more pull from the laser light.
Unshaved hair can obstruct the laser light from reaching the follicle.
Lasers may burn the protruding hair and leave small skin grazes.
Keep these tips in mind before laser hair removal.
As it removes follicles required for the laser to detect.
Morning of your treatment or the night before.