Reducing Hypertrophic Scar from Mole Removal on Penis? (photo)

I went through a mole removal on my penis past October. Soon after, the wound was infected and when it was healed, a pigmented hypertrophic scar took its place. I went back to the dermatologist and he gave me Dermaflex Hydrocortisone, and when it showed no results, Corticosteroid cream. I asked if there are other methods that can reduce the appearance of the scar and he said not for that area; is he correct? Would laser treatment work? Would using silicon sheet along with corticosteroid help?