Certified Pure CBD. Independently tested by a third-party laboratory.Hemp roots have historically been used for inflamation, especially arthritis pain. Research has shown that hemp roots contain terpenes, or hemp essential oils which may be helpful in treating dozens of conditions. For Arthritis, Restless Leg Syndrome, headaches, sore muscles, leg cramps, knees, shoulders, elbows, and back. Rub a small amount of salve into skin until absorbed. For rough areas, apply a liberal amount several times to help with absorption.