Salonpas HOT contains Capsaicin, an unscented topical analgesic. Derived from chili peppers Capsaicin provides a warming sensation that provides effective non-irritating pain relief for up to 8 hours. The folded 5x7"" patch is large enough for your biggest pain points. This patch is versatile enough to provide temporary relief of minor aches and pains of muscles and joints associated with Simple Backache, Arthritis, Strains, Bruises and Sprains. Topical pain relievers like Salonpas are recommended first-line pain treatment based on CDC & other guidelines. The targeted relief of Salonpas topical pain relievers works at the site of pain. Non-addictive Salonpas topical pain relievers are gentle on the body. In the century-and-a-half since our founding, Hisamitsu has pioneered the development of patches and other topical treatments to relieve everyday aches and pains. This is our mission, to make topical care available for all who seek it - anytime, anywhere.