I used to get them a lot too
enough to make me stop shaving my pubes for good
BUT as far as other body areas go, here's what I find.
BEFOREHAND make sure the pores are open, run the skin under warm water, that way the cream doesn't just sit on top
Then when you're done make sure to get it ALL off, and exfoliate DAILY! This means scrubbing and in some cases, even using a body scrub, something with extra exfoliation. I use a body scrub (different than body wash) and a washing puff by Axe, or an exfoliating cloth (like $3 at Wal-Mart) and REALLY scrub.
what that does is get the dead skin off of the body before it can inhibit your hair from growing freely which is how hairbumps get started