BioSmart’s unique pain-relief roll-own features our high-potency CBD isolate combined with a rapid delivery system utilizing DMSO and emu oil in a coconut (MCT) and citrus oil base to provide a superior transdermal delivery of CBD directly to the site of pain and inflammation. For any instance where pain can be localized to a given area, this roll-on works to relieve that pain. Just roll-on the affected area. There is a slight citrus scent which dissipates quickly. The formula absorbs into the skin quickly in about 3 minutes and quickly disappears. It takes about 10 minutes to notice the effects. Can be used for joint, knee, neck, and other locations where transdermal application is required to reach the source of the pain.