DMSO Liquid 99% Purity Dimethyl Sulfoxide Solvent 16 oz. 2-PackDMSO Liquid 99% (dimethyl sulfoxide) is a simple small molecule with amazing chemical, biological and physical characteristics. DMSO is the resulting by product from the manufacture of pulp and paper. It has been used for over 100 years and is harmless when used with the proper precautions. CAUTION: May cause skin irritation Avoid contact with eyes, skin, and clothing Wash thoroughly after handling. Other Properties of DMSO Reduces pain and swelling