Assuming this is a keloid scar, I would use a combination of IIT, laser therapy, Plato's Scar Serum and Melarase PM creams.
Hypertrophic Scar/Keloid -- Pulsed Dye Laser/VBeam, 5fu/steroids, Fraxel/Viva, CO2, Aerolase
I would suggest an in person consultation with an expert for evaluation. Hypertrophic scarring should be treated in a combination approach with lasers along with steroid/5fu injections. Please see an expert. Best, Dr. Emer