I use a bidet as well, but sometimes the pressurized water stream is like pressure washing the burned area. This happens on days when I have clusters of 5+ BMs within 20-30 minutes due to a prolapse (which will soon be resolved with endoscopic therapy by Dr Shen!). When the bidet is a bit too painful, I apply aloe vera gel to the rash with very good results and little residue as it dries or is absorbed rather quickly. This time of year I also find that applying a sparse amount of fresh canteloup juice or puree quite beneficial immediately after a BM or accident; the enzymes in the canteloup neutralize the acid causing the burning. Of course, this approach is not quite as tidy as aloe Vera juice, but does work much more quickly. I apply it either in a bath tub (shower) or use a sitz bath to soak for a bit.