Chemical peels are also another technique used for the treatment of facial scars. In this process, mild acids are used in monitored manner on the upper layer of skin. This use of acid peels off the layer of skin and exposes the underlying layer for formation of new skin in that area while getting rid of the scar tissue as well. According to the nature of the scar, these peels can work on deep layers or only on the superficial layer of the skin.