Details
Swix brushes are designed for brushing wax out of the structures (base patterns) in ski bases and snowboards after you have used the plexi scraper: They should be used in one direction, from tip to tail.
There is a wide selection of Swix brushes. They are made at different price levels with different qualities depending whether you are in the sport/recreational catagory or into high level racing having to do many skis or boars in a short time.