Deep Heat Spray is a topical pain-relieving spray used to ease muscular aches, joint pain, sprains, strains, back pain, and sports-related injuries. It contains warming ingredients such as methyl salicylate and methyl nicotinate, which help increase blood flow to the affected area and provide soothing relief. The spray is commonly used before or after exercise to relax stiff or sore muscles. It is for external use only and should not be applied on broken skin or near the eyes.