Feel the deep, cooling relief of Castiva Arthritis Pain Relief Lotion as you gently massage it into your skin. Castiva immediately goes to work at the site of the pain to temporarily relieve arthritis, strains, and other joint symptoms. The unique blend of menthol and natural castor oil allows Castiva to work quickly and penetrate deeply. Castiva speeds soothing relief of discomfort associated with joint and muscle pain so you can get on with your day. Castiva Warming lotion contains capsaicin, an active ingredient recognized by experts, under FDA standards, as safe and effective for temporary relief of minor aches and pains of muscle and joints associated with arthritis, simple backache, sprains and minor strains. Capsaicin also provides a slight warming sensation on your skin. What makes Castiva Warming formula different is Castiva's natural castor oil base, and the latest technology to allow the Capsaicin to penetrate deeply and provide fast acting relief. Simply put, rather than lying on top of the skin, Castiva's technology helps the medicine get down into the skin.