Pain Eraser was initially developed in 1975 by Captain Gray, a USAF Veteran, for his back injury. With his Bachelor of Science degree from Texas A&M and the good supply of research material and product available to him through his new company, his search for pain relief began. DMSO is the penetrating & carrying agent chosen to transport the select natural ingredients to the point of pain or injury. Years of testing various ingredients molded Pain Eraser into existence as the ultimate in Pain Management. Many natural ingredients can perform pain killing chores but finding those that blend & perform together is the challenge. It was decided to dispense with lab based chemical products and utilize only pure, undiluted natural ingredients. Many choices were tested and discarded while others were found to be the ideal ingredient. Herb essential oils were the most effective at defeating pain for extended periods of time. Peppermint essential oil, though expensive, covered many of the overall needs. Clove, wintergreen, menthol, oregano, spearmint & eucalyptus & olive leaf extract combined well and covered the wide spectrum of Pain Management demands. Aloe Vera & coconut oil were chosen to function as skin conditioners as well as coating the roller ball on the 3 oz. bottle. This would prevent oxygen from entering & damaging the essential oils and the aromatic fumes from escaping. Even the label has to be acrylic coated to prevent the ink from being erased.