Please advise what is the best way to remove keloids from the skin?

Improve, yes... But get rid of, no (this applies to all scars.) true keloids can be very difficult to deal with. They are more common in people with darkly pigmented skin and are characterized by scarring that exceeds the boundaries of the original wound. Numerous options exist including pressure, steroid injection, low dose radiation, and others. See a plastic surgeon for an evaluation.