Salonpas Pain Relieving Patch, 140 Patches These comfortable, convenient and effective topical pain patches have 3 powerful pain fighters that work at the site of pain. With rounded corners and flexible fabric, application is easy.   For temporary relief of minor aches pains  Apply for up to 8 hours Targeted pain relief FSA Eligible Ingredients: Camphor 3.1%… Topical analgesic Menthol 6.0%… Topical analgesic Methyl salicylate 10.0%… Topical analgesic Warnings: For external use only