Treatment for Light-colored Area on Cheek?

On my cheek, there is a skin area with lighter color that is about a size of a nickel. It is noticable if you look at it carefully. I don't understand why that area turned lighter in color than other part of my face. What is the reason for this and what treatment I can use? Thanks.

Asked 30 months ago by tainle in New York City, NY
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