I just finished my first jar of this product. DMSO penetrates skin better than any other medicinal substance, even though this is considered medicinal serendipitously; it is a byproduct of paper manufacturing. It is anti-inflammatory. You must be sure your skin is clean before applying it as it will cause anything on the skin to penetrate with it. It relieves aches and pains rapidly and works for a reasonable amount of time. DMSO is becoming recognized as a valuable medicinal substance to the chagrin of big pharma. Books are being written about its uses and applications. It behooves one to learn more.