I always use a comb to remove hair from my brush. Removing product is more difficult. With plastic brushes I always wash them with warm water and liquid soap, using my fingers and a plastic comb to dislodge product and sebum. I haven't been using any styling products since starting to use my BBB, and am not sure how I'll clean it if it ever gets sebum buildup, since the boar bristles are attached to a wooden base that I assume shouldn't be exposed to a lot of water. (However, I've been using this brush for months now and not had any buildup problems in the absence of styling products.) I'd be interested to know how people with wooden brushes clean off buildup, because I've definitely had icky gunk on brushes back when I was using styling products regularly.