Yep, Anti Monkey Butt Powder
http://www.antimonkeybutt.com/

Good stuff.

I also used pimple cream a few times when I had a bumpy problem ... and a couple times I slathered my fanny with a clay facial mask. Got a good giggle when I turned around and caught a glimpse of my green fanny in the mirror (it was a "mint julep" facial mask).

Anyway, so far I'm not having trouble with that any longer since I changed to a narrower saddle, and started bathing the butt cheeks (and everything else) thoroughly with wet wipes before I get into my work clothes. It's been 85 degrees with 78% humidity out there most mornings lately, ugh ....