What is laser hair removal? Laser hair removal offers men a safe, fast and effective alternative for dealing with unwanted hair in the areas men are most affected: back of the neck, upper and lower back and chest. Lasers work by emitting a specialized light that is passed through the skin and preferentially absorbed by its target, in this case, the darker melanin color in the hair shaft and follicle. Laser hair removal is safe enough to be used on all body parts. Multiple treatments spaced out over three to four months are typically needed to maximize hair reduction results. Some redness and irritation of the skin is expected after the treatment, but it is very well tolerated.