(Finish Line Horse) Contains no cancer-causing ingredients, and does not cause rashes in people or animals, like nitrofurazone can. Fura-Free contains tea tree oil, calendula oil, thyme oil, myrrh oil, lemon balm oil and wheat germ oil. It heals faster, with a more flexible scab and less proud flesh. Also can be used as an excellent sweat product. Fura-Free remains stable in hot temperatures, is great for your hands and smells good, too.