Deep heat works primarily by applying warmth to muscles and joints, which causes vasodilation—the widening of blood vessels. This increased blood flow delivers more oxygen and nutrients to the affected area, helping to heal the tissue and reduce stiffness. The heat also stimulates thermoreceptors in the skin, creating a warming sensation that can distract the brain from pain signals through the pain gate mechanism. Additionally, deep heat promotes muscle relaxation and reduces tension, which can alleviate spasms and discomfort. Key active ingredients in deep heat products like menthol, methyl salicylate, and capsaicin work synergistically to induce these effects and provide analgesic benefits. The overall impact is improved circulation, faster tissue repair, pain relief, and muscle relaxation.
