Hi, I'm 47 yrs old, I've had pigmentation on both cheeks, bridge of the nose, upper lips and forehead since 5 yrs now, the last medicine I was given by a dermatologist was Pigmanorm and it worked, but when I stopped using it after 2 months because my pigmentation was turning a blackish colour, my pigmentation has come back. At the moment the dermatologist has given me azlic acid. I'm not satisfied with that medicine, can I use dermovate?