Timber Pro CRYSTAL URETHANE is a premium quality waterborne acrylic urethane finish. The film-forming finish provides an exceptionally washable, chemical and stain resistant coating to all interior wood surfaces. Enhanced qualities such as: fast dry and a low VOC. non toxic formula make it the best choice for all your interior wood coatings needs. CRYSTAL URETHANE is also an excellent clear top coat to be used over Timber Pro 4-IN-1 interior stain formula.