What is a Muscle Rub? Customer Service February 12, 2020 16:40 Updated Follow A Muscle Rub is a lotion product that is to be applied directly to the skin like a lotion. Related articles What ingredients are in the Forth™ CBD Muscle Rub? How do I use a Forth™ CBD Roll-On? How do I use a Forth™ CBD Muscle Rub? What makes Forth™ CBD products so different from competitors? What is CBD? Comments 0 comments Article is closed for comments.