1. Remove all the hair from your brush. You can pull it out with your hands, but I also like to use a comb - start at the base of the bristles and pull up the hairs. For really tight hairs, you can even use a toothpick to loosen them. WARNING: Gross picture! EW!!!
2. Soak your brushes and combs in a bath of equal parts vinegar and warm water in a bowl or mug for about 15 minutes. You could also use water with some drops of shampoo instead of vinegar. Soaking your brushes and combs will break up any oily deposits and lingering hair product. If you have a brush with a wooden handle, or natural boar bristles, lightly scrub them under running water instead of soaking. The wood can split and the boar bristles may curl.
3. Lightly scrub off any leftover deposits on the base and bristles.
4. Rinse with clean water and dry on a towel.