CDS 30000ppm burns skin

A friend put 3 drops of CDS 30,000 on cotton wool , taped to a red spot bite on her arm. After 4 minutes it started to irritate, itch.burn that she removed it, washed it off.
Shortly a pinkish patch, 12mm or 1/2 inch  across covered that area. Next day redder. 3 days later very dark red, could see it was definately a burn.  I was surprised as it was supposedly on for minutes and being only oxygen did this. So in my wisdom I placed 3 drops of same 30,000ppm CDS drops onto the skin and let it sit there without covering it to see what happens.  3-4 minutes later it irritated that much I washed it off. And now I also have dark red burnt 6mm patch skin burn. No pain at all from the time of washing it off. Just the area looks redder every day. No scab. Just burnt. Then Day 5 the top layer of skin came off. Still no pain. Wouldnt know it was there until I look at it.
Any ideas out there from someone using CDS on the skin? Any reactions?

First thing is… you’re playing scientist with chemicals. HCL is an acid and it will penetrate the dermis barrier. You are destroying skin cells by putting HCL oxidizer directly on the skin. Cells die and your body must replace them so your skin will very likely be discolored until your body does just that

There are protocols for skin conditions, it is recommended to follow them as they have already been tested.