The basics This is a versatile brush that's great to have since it can be used to clean a wide variety of fabrics and leathers. The benefits Natural bristles will not scratch leather or pull at the threads of fabric. The uses Use this brush to scrub away dirt, dust, debris, and stains. The bottom line This brush can be used dry, but Otter Wax highly recommends this brush for applying their Saddle Soap (if you are cleaning leather) as well as their Canvas Cleaner (if you are cleaning fabrics).