Black Lion Coco butter i doubt would be any good for keloid scars. It is worth you giving Bio Oil a go but i would recommend that you maybe see your doctor as well if you have not maybe they could give you something that could be more effective.

Coco butter and bio oil i would recommend for more general scars and dark spots.
There was also a consumer test done and Coco butters stretch mark cream was voted as being the most effective strecth mark cream it was voted above Bio oil.