If the laser is being performed by a trained therapist, under the supervision of an expert dermatologist, taking care that all necessary precautions (like skin miniaturization and hydration) are taken and the laser parameters decided according to the type of hair (coarse or fine), the site which is being lased (face, underarm, genitalia etc) and the complexion of the patient (fair or dark), you can be assured of optimum results with no side effects.