I'm wondering if getting an acne treatment will improve marks and redness as well.

Acne is a problem these days, but the lingering marks are causing me even more stress. I'm looking into acne treatments, and I'm curious if they simply soothe the acne or if they also improve marks and redness. I've heard that treatments can even out skin tone a bit, so I'm looking forward to that. I'm also confused about whether I need multiple treatments to lighten the marks, or if separate aftercare is necessary. If anyone has seen results with marks as well, I'd love to know how you went about it so I can use it as a reference.