If you have a large burn scar, it won't work if you apply medicine. Generally, the drug will be effective within 1-2 months after injury. If you don't accept skin grafting, it is estimated that there is no good way to plastic surgery now, but you can ask in two big cities, Beijing and Shanghai. Shanghai No.9 Hospital and Beijing Plastic Surgery Hospital are not bad. You can contact these two places first, but be careful not to ask interns to do it. Be sure to find one.