I might be the minority but I only use 2 (one for black and another for tans). Have thought about having an exclusive brush for my light cordovans (i.e., whiskey, Ravello) but I have not gotten around to it.I just leave them be. I do my normal cleaning routine and they eventually go away (either that or I get used to seeing them). There's no "magic" solution although suggestions such as cold spoon, deer bone, brushing hard, etc. will be recommended by some.