Jim,
Follow the above link. This is a clinical study that shows even the lowest concentrations of PI inhibit cell regrowth.

Sure we have all used it on wounds before,myself included but medicine is a "practice" and ever changing. CPR has even changed recently. New studies do not recommend using PI in any concentration directly in an open wound.

There is some antiseptic benefit to putin PI directly in a wound but that does not mean you have damaged the tissue and inhibited healing.