There is no laser in the world that has received FDA clearance for a claim of permanent hair removal. However,
the Light Sheer Diode Laser was the first to be cleared by the FDA for permanent hair reduction. That is defined by the FDA as 85% or greater hair reduction. It is possible that follicles in the treated area, while not being completely destroyed, will be sufficiently disabled to the point where they produce only very fine, light hairs that do not respond to further laser hair removal treatment. This is backed up by several years of extensive clinical studies and you should be wary of anyone or laser hair removal advertisement that claims otherwise.