Not only can a boar bristle brush create … Gently cleanse with MM shampoo (or water), using a cloth to wipe. Do not submerge brush. This can cause mold. Once you’ve adequately stimulated the production of oil, you can then start brushing through the... 3. Brush … Rinse only. How to brush your hair with a boar bristle brush 1. From root to tip Use a different brush or a comb to first detangle your hair. Here is the best way to clean your boar bristle brush: Remove the hair with a wide toothed comb, carefully so you don’t pull out any bristles. Start at the roots Boar bristle brushes are ideal for stimulating the production of sebum and oil which keeps our... 2.