Laser can work on the skin in a variety of processes such as photothermal, photomechanical and photochemical process. With photothermal procedure the possibility of scarring is less than one percent. However, the photomechanical laser is known to be safer than the photothermal laser treatments and leaves the epidermis intact. Beware of improperly used laser devices. Damages can lead to effects such as irreversible injuries and skin burns. Thermal accidents are likely to happen due to a rise in temperature following absorption of laser energy. Acoustical effects are the result of a mechanical shockwave propagated through tissue. The laser beam might cause localized vaporization of tissue which ultimately damages the tissue. Be sure to choose an experienced physician who will avoid such risks.