Chalk Mountain Brushes use natural boars hair to make their brushes. Using the wax brush, apply wax in a circular motion to your project. Care instructions all brushes, even boar hair brushes will tend to lose bristles. Before using your new brush, you will want spend a minute or two, working loose factory bristles from your brush. Then wash and work the loose bristles free from brush a second time. This will eliminate most of these loose bristles from showing up in your paint project and will remove natural oils from the bristles. Important: Clean with soap and water but never soak your boar hair brushes. Note: Once boar hair brush is used for a wax brush, we would recommend to not use the brush as a paint brush, due to the wax coat left on the brush.