Itis great to be able to get advice on here about personal issues with no stigma👍
I kept myself well hydrated during my RT but course this depends how well you personally cope with urine retention.
I used Dove shower gel during my treatment and I liked it so much I have continued using it today. I also purchased a tub of 99% aloe vera gel which I applied all over the treatment area once I got home and had had a shower I had no skin issues at all which I put down to this routine.
I also used a moist impregnated toilet tissue to avoid “stinging ring” issues. This worked for me.
As it seems prudent to add these days, the comments above worked for me, but may not work for you, so take advice from a professional at your treatment centre