I tried a blow drier on some DC figures. I don't know if the heat makes it disappear, but it's faster than trying to wipe the dust out of non smooth surfaces. Not sure if it stays away long term. I recently noticed it on some Disney Infinity videogame figures like Falcon, Iron Man, and Donald Duck.
I use this method too, as it makes it disappear pretty easily and quickly. But unfortunately after a while it does come back.