Spray a generous amount of Brush Cleaner onto tissue. Swirl brush hair down onto damp tissue in circular motions for 10 seconds. Spray a second application of Brush Cleaner onto a new tissue and repeat. Brush hair should dry fairly quickly. Use weekly or as often as needed.
For a deeper cleaning of the brush, empty the powder out of the tube into a bowl. Once empty, fill a 6 oz glass with warm water (or fill up water in a sink or large bowl) and add 1 tablespoon of a gentle sulfate-free shampoo or cleanser. (Be sure to avoid the ingredients Sodium Lauryl Sulfate and Sodium Laureth Sulfate as these harsh detergents may dry out the natural hair bristles. See the collection of Renée Rouleau sulfate-free gel cleansers.) Swirl brush in the glass, sink or bowl for 60 seconds. You should see the water lather up and turn dark in color from the powder on the brush. Pour out or drain water and fill back up with warm water only and swirl brush in glass again for 60 seconds. Repeat if necessary until the water is clear. Remove brush and squeeze out excess water from bristles. Wipe brush back and forth on a clean, dry towel to absorb moisture. Next, use a comb to de-tangle the bristles to get them back in their original shape. Lay brush on a clean paper towel and let dry out in the sun. (The sunlight destroys bacteria and helps to dry your brush faster.) Refill powder back into the tube of the brush.