Some swelling and skin redness may occur for several days after laser surgery. Patients may be required to antibiotic ointments during the healing process. The doctor will provide you with specific post-operative directions which should be closely followed. In many cases, sun exposure may need to be avoided and sunblock used. In some laser treatments, particularly those involving vascular deformities, the full effect of treatment may not be apparent for one to two months. In addition, multiple treatment sessions may be required.