FDA Warns of Burns From Muscle and Joint Pain Busters

OTC muscle and joint pain relievers may cause chemical burns in rare cases, U.S. health regulators warned on Thursday. Products that contain menthol, methyl salicylate, or capsaicin - including major brands such as Johnson & Johnson’s Bengay, Sanofi’s Icy Hot, Capzasin and Flexall, and Rohto Pharmaceutical’s Mentholatum — were found to cause first- to third-degree burns.
Reuters