What Causes Pigmentation And Sunburn On The Face?

hi

i'm Hanaa from palestine

i havr a seriouse pegmintation problem 5 years so far. a doctor had given me a pealing cream and then i got sun burns all over my face, especially my cheeks. i spent alot of money trying to get red of it but it just stay there.. my self esteem and my self confidence is really bad.. what should i do? noting here in israel and palestine could help me.. what should i do? please help me.. i am 25 years old now and i am losing my best years feeling ugly.