How to get rid of a bumpy forehead? (photos)

So I have this bumps on my forehead, you can't squeeze them for them are not whiteheads or anything like that, they are painless and they have some pigmentation, you can see them the most when there's a light above my head, or tilt your head, they aren't uncomfortable or anything like that, but they just make my complexion look kind of dirty and not really nice. What should I do?

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