Watco teak oil finish is a deep penetrating oil specifically formulated for dense exotic woods such as teak. This VOC version has been formulated to meet air quality regulations that are in effect in some areas. Teak oil can be used on interior surfaces such as furniture, trim, or paneling and on exterior marine surfaces such as outdoor furniture, boat trim rails, and doors. Apply with brush, roller, or spray to dry, finish free wood surfaces. Allow to dry overnight prior to use. VOC compliant in some areas.