Potassium Iodide sounds interesting, but I don't know if it works like Lugols or if it has to be the Lugols combination in order to work properly.
I think that Iodine is the key to scar removal/regeneration, the experiment of Dr. Derry is quite remarkable.
I don't know any other substance which produced such a result and was published by a real expert in his field.
Al those stories of Vitamin E, honey, exotic oils and whatever have al no real backing.
The only problem is no proper instruction for the "normal guy" exists.
It's still quite under the radar.
My scar already had scabs many times when the scab fall of the scar tissue looked quite "fresh" so to speak but it was still there.
And after I've stopped iodine/lugols application it went back to it's normal appearance.