u can try using a paint brush or make up brush.. I use a large blush brush to dust off my cakes when I'm done. the bristles are really soft, but there are a lot of them so it usually does the trick! I hope this helps!
All designs made specifically for my customers. Thanks! Katherine Thomas Cake Designer, Kat's Cakes in Lafitte, LA
I use a cake-only painters brush (extra fine). Usually, most dust will come off with the brushing. Any tough spots, I rub my bristles on a wet paper towel (so the brush isn't wet, only moist), and then brush again. That usually does the trick!