Hello, because the scar lasts for more than one year, any anti-scar drug can't achieve obvious effect. You can make a dilator. The 2 cm scar you mentioned can be operated twice, and the cost is 20,000 yuan, at Peking Union Medical College Plastic Surgery Hospital, Badachu. That's the best scar treatment at present. I did it there myself. Or if you are near Dongguan, you can go to Kang Hua Hospital and ask Wang Chuang to do it.