Will Rash on Cheek Eventually Fade?

Both my upper mid cheek area is pinkish red for prolong period of time now (4+ years). My dermatologist said i have Serberherric Dermatitis. For a while i believe i do have it and treated the irritated skin. Now everything is under control except discoloration pinkish red color on my cheek area. I went back to dermatologist after 2 years since when i first diagnosed and he still insist is that problem that oil under my skin causing the inflammation. Will my skin become normal color again?

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