SALONPAS GEL-PATCH HOT contains two powerful pain fighting ingredients. Menthol for a cooling, soothing sensation and Capsaicin for long lasting heat,. hot sensation relief. The combination provides up to eight hours of targeted. relief! The advanced gel patch technology stays in place better than most. other patches. The rounded corners prevent peeling and the split film in the. center allows for easy application. Gel Patch Technology soothes the pain away. and menthol cools on contact then delivers deep penetrating waves of heat. Capsaicin, the actives in chili peppers, extends the pain relief for long.