Your instincts are great. While reading about your experience, I thought about an article Dr. Jonathan V. Wright wrote suggesting mixing DMSO with Iodine to flatten keloid scars.
http://www.tahoma-clinic.com/iodide.shtml
"Keloids" are abnormally thick scars, sometimes as much as an inch thick, that can form after injury. Although anyone can get a keloid, they're more common among blacks than other ethnic groups. Rubbing SSKI into a keloid at least twice daily will ultimately flatten them down to a "normal scar", but it can take many months to a year for particularly bad ones. The treatment goes faster if SSKI is mixed "50-50" with DMSO.