I knew a guy who had this trouble, he was a chef, so the heat in the kitchen added to his 'issue'. He swore by talc. Loads of the stuff.
One time, he ran out of talc, and used plain flour instead....
Apparently his evening bowel movement was, shall we say, excruciating.
The flour had become wet with the sweat and formed a sort of sticky dough on the hairs around his 'sheriff's badge'. This dough later set hard, so as he thrust, his 'movement' tore all the hairs out.....
Anyway, I'd go with talc, baby talc is good.
Absolutely hilarious. I've literally got tears rolling down my cheeks, (upper cheeks, not lower cheeks as in the post above.)