Recommend A Solution For Black Spots On Cheeks During Pregnancy

Hi, I am 32 yr, female. I stay in Dubai. after one month of my delivery i started getting some black spots on my both the cheeks (starts from eye side) since 2 yrs. now it has increased around 20-25 spots. recently (2 months back) i consulted a doctor. but it didnt help. now again it is increasing after applying that medicine. Could you please give me best solution for it. Thanks