Bleeding to a minor degree occurs in all. Infections and cold sores can occur. Bruising can happen from the injection of local anesthesia. There is a prolonged redness that can last for a few months in some people. Brown spots (hyperpigmentation) may appear, and happens more in patients with more pigment in the skin. A decrease in the skins pigment may occur (hypopigmentation) and may be the most problematic long term effect but is usually covered easily by makeup.