Nature's Gift DMSO - 90%/10% Distilled Water Gel - 4 oz. DMSO has been used for over 100 years in the United States. It is a natural substance derived from wood pulp and is harmless when used with proper precautions. Sold as a solvent. DMSO is an amazing substance that has many uses around the world. DMSO may be helpful in relieving pain, inflammation, scleroderma, and interstitial cystitis; however, the intended use is only as a solvent and the choice to use it in other applications. Nature's Gift DMSO 90%/10% Distilled Water Gel, 4 Ounce