I've never put powder on my balls, but I had an ex-boyfriend who would always sweat so bad all over his body and would put on plenty of ball powder before working out. I don't remember what he used but I think it had "monkey" in the name.
I never liked it when he put on that powder when we working out or running together because I would love getting all sweaty with him and then afterwards sucking his cock and licking his sweaty balls, but I couldn't really do that if he was all powdered up.