Any suggestions for Hypo pigmentation? (photos)

I've been noticing a slight skin discoloration around my nose, eyebrows and mouth areas. I've seen a dermatologist and she prescribed ketokonizole shampoo and tacrolimos ointment. These haven't shown improvement in 3 months. Today she prescribed finacea which cost me $200 after insurance. I can't afford all theses medications that won't help. Any advice or suggestions would be greatly appreciated.

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