Skin cancer accounts for 45 to 80% of all equine (horse) cancers, the most common type being sarcoid tumours. Wikipedia
Application of a small amount of wheatgrass extract on the affected area(s) once a week can do much to help remove these tumours and to heal surrounding damaged skin, as shown below in Case No. 1.
(Note: "Dermawheat" is an older product brand which is now "Dr Wheatgrass".) Cansema (black salve), effectively removed the sarcoid growth at the base of this horse's ear but left an open wound that had still not healed after three months. However, daily application of wheatgrass extract healed the wound completely in 5 weeks. (Further use of the extract has shown that a once weekly application is more effective.)
Note: Sarcoid wounds can be difficult to heal with Cansema because of the damage it can cause to surrounding skin and underlying tissue.
Case No. 2.
The owner of this horse was pleased to say that: "One of my horses had two sarcoids; one on her muzzle, the other on her hamstring. Dr Wheatgrass cream cleared them both up in a matter of weeks. I applied a small amount twice a day."
Georgia. Australia.
Learn more about using wheatgrass extract for treating animal injuries.