Can microneedling re raise keloid scars that were once flat ??? I have been trying to treat a 7 year old small keloid scar on my chest . I had steroid injections to help flatten the scar, which led to skin atrophy & thinning of the skin.I was recommended dermapen to help stimulate collagen back & noticed the dent had gone but my keloid scar was back to looking raised once again .