How To Treat Discoloration Of Skin On Face,neck,forehead And Jaw?

Dear Dr! I am 52years of age ,lady from Mumbai.having skin discoloration of the skin on face neck,forehead and jaw lines. rest of the body part is not effected.had taken few session of lasser and peeling treatments but no improvements.hoping and praying that u will be able to solve my problem i am pretty looking lady so it is very depressing for me.please! i need your advice.
with best regards.
nur.