Laser Hair Removal Machine Uses & What Is Diode Laser Hair Removal Machine Laser hair removal is an operation that utilizes a concentrated light emission (laser) to eliminate undesirable hair. The laser hair removal, a laser emits a light that is consumed by the shade (melanin) in the hair. The light energy is changed over to warm, which harms the cylinder formed sacs inside the skin (hair follicles) that produce hairs. This harm hinders or defers future hair development.