Since I was using Lugols and it stains I would cut off the 3 inch portion of a pointer finger from a non-latex glove and slip it over my entire pointer finger. Then I would hold my hand horizontal with my pointer finger pointing out (palm side up) and carefully drop 1 drop onto my pointer finger and then rub that onto the scar.
I would keep rubbing the liquid into the scar for a few min after a few min I would lightly blow on it to help it dry faster. in 3-5 min most of the Iodine is absorbed and the scar is stained with the lugols. I would do that 3-4 times a day. I keep reusing 3" non-latex finger I never rinsed it cuz it is Iodine and will kill all bacteria. I tried this with SSKI but Lugols is the only thing that peeled in the manner that I describe above.
I hope this helps. Sorry for the delay it's been a really busy week.