Laser hair removal is for hair with color; gray, white, or red hair will not be detected by the laser and will not treat the hair permanently.  Dark hair has long-lasting, almost permanent results. Waxing, plucking, or topical hair removal should to be avoided prior to treatment for the laser to be successful.  If the follicle is removed the treatment is ineffective. The area being treated should be cleanly shaved and must stay out of the sun following the treatment.