What chemical peel is best for clearing up many acne marks/hyper-pigmentation on dark skin?

Glycolics are good: Glycolic acid peels are usually gentle enough that you have no real downtime afterward. They are safe for darker skin types and can be great at decreasing the hyperpigmentation that follows inflammation. You will benefit from a series of peels, and they will create a smoother texture, tighter tone, and fresher look for your skin.