Hi, I am 42 yrs old. 2 years back I had developed a small light brown patch developed on my cheek bone and now its dark. Also developed on other cheek bone too. Dermatologists have confirmed that its melasma and applied various creams - but of no use. IS THERE A TREATMENT OF removing by any kind of acid wash. If so, could you let me know who does it in hyderabad. My mail id: balsi@rediffmail.com