Most surgical repairs after Mohs leave minimal scarring. Following your doctor's would care instructions is often all you need in order to obtain a superior cosmetic outcome. However, occasionally more prominent scarring will occur. There are a number of treatments to reduce scarring. My highest recommendation is to apply sunscreen over the area, as scar can darken and become more noticeable in the sun. Silicone dressings often help lubricate the scar and promote skin healing. Other find benefit by applying Vitamin E to the scar. Thicker scar can be injected with intralesional steroids to make them shrink down. Pulse dye laser can be used to help reduce any redness in the scar, or broken blood vessels that sometimes develop around the scar tissue. Other laser devices like fractionated resurfacing can help blend the scar (almost like airbrushing) in with the surrounding skin. Regardless of which treatment you chose, you should always consult and work closely with your doctor to get the best result. Some of these treatments should not be attempted for a number of weeks or even months after your surgery is performed. Good luck.