Hair brushes are a little more complicated. First, remove as much hair from the brush as you can using your fingers or a wide-toothed comb. Rinse the brush well under warm water. Fill your sink with warm water and a little bit of baby shampoo and swish your brush through for about a minute. If there’s still gunk left on the bristles or the pad, add a teeny bit of extra baby shampoo to your (clean) fingers and lather the affected areas. Rinse very, very well. Let air dry, bristles facing down, over the edge of your bathtub. DO NOT dry your hair brush with the bristles facing up; water can get trapped in the padding, and encourage bacterial growth!