DMSO (Dimethyl-Sulfoxide) is the main active ingredient, it is a sulphur rich natural substance derived from wood pulp that acts as an anti-inflammatory. This potent pain relief can quickly alleviate pain and swelling. Customers have noticed instant pain relief when used topically.  Do not use if pregnant or breast feeding. Consult your healthcare professional prior to use or if allergic reaction occurs. Available in 50ml and 100ml