Doctor Hoy’s™ Natural Pain Relief Gel combines arnica, a powerful, natural anti-inflammatory, with camphor and time-release menthol for deep-pain relief from arthritis, sprains, muscle strains, backaches, and joint pain. Dries clean with no oils and has a vanishing scent. Safe for repeated use and relief lasts for hours. Great for on-the-go pain relief. Perfect for airline travel. Use with therapy tape, massage, ultrasound, manual therapy, and scraping.