Acne marks, flaking and bad pigmentation (Photo)

I'm currently on oratane 10mg and as expected my skin is a bit drier and more sensitive. Now my face is literally 3 shades darker than the rest of my body (see 2nd picture) and it worries me a lot. I do use an oil-free sunscreen everyday. What lotions/ creams can I use to (1) restore my natural complexion (2) ease the flaking and (3 )reduce the appearance of dark/acne marks.

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