Scar constitution, some people just have scar hyperplasia as soon as they have a wound, and some are because the edges of the wound are not neatly docked when they are restored, and the wounds of the chest, joints and neck are more prone to scar hyperplasia. In fact, if the wound is not big, you can apply some drugs to inhibit scar hyperplasia during the recovery period (redness period), and the improvement is still obvious.