If anyone has done "anal bleaching", please explain the way the process felt, and how the skin was afterwards?

I know what the websites say, but I am wondering, from anyone who has actually done this. Does the skin stay supple or is there "micro scar rigidity" of the tissue, as can happen from any "bleach burn" on skin? Is there pain during the bleaching? How about long term? How long does the tissue stay "lighter" or does it seem to be permanent to you (or to your partner, I guess)???

Any info welcome. Please educate us on this still little known process.