I work in a paper plant 12 hour shifts and have a problem with anal sweating or moisture that cuases a rash. I have to go to the rest room and use toilet tissue to dry it. Please advise me of any powders or medications that can stop anal sweating.

Have you tried underarm antipersperant? Often in the summer I will swipe mine under my arms, then do behind my knees, inner elbow, and under breasts before I get dressed.

Are you wearing pants that have polyester in them? This material is one that breathes poorly, causing sweat that does not evaporate.

Try corn startch based powder. It should absorb.

My partner uses a product called 3B... it is an antifungal product that help with chaffing and sweating.
If that product isn't available there are plenty of others specifically designed for under breasts and between the buttocks.