I have a nice buffalo horn handle brush which I ordered a few years ago from Kimson(?) in Viet Nam. I like the brush, but stopped using it some time ago when I noticed a few small checks forming on the handle. I've recently used some "Trade Secret" furniture polish on the handle. It shone up nicely, but I'm still hesitant to use the brush regularly, as I worry that constant exposure to water and soap will ruin the handle. Can anyone offer suggestions on regular care and maintenance of horn handles?