One thing I've used for decdes is COMFEY powder.
Amazon.com: Frontier Comfrey Root Powder Bulk, CERTIFIED ORGANIC, 1 lb: Health & Personal Care
I learned about ir when a girl used in in teh 60's on her boyfriend who took all the skin off his arm by a MC crash - road rash. I used it on an exact cut 1) I went to emergency and had stitches, it got infected, left a scar, and took weeks to heal. Same cut I used COMFREY root, never got infected no stitched no scar and healed in a week.
Comfrey contains a special substance called allantoin, which is a cell proliferative. In other words, it makes cells grow faster.
Use Comfrey Root as a Natural Remedy - Natural Health - MOTHER EARTH NEWS
Dr. H.E. Kirschner, M.D., author of Nature's Healing Grasses (available on Amazon.com), describes one of his most interesting cases involving comfrey: "A middle-aged woman came to me with a large malignant ulcer below the eye and close to the nose. I prescribed a comfrey poultice and a "green drink" containing comfrey leaves. Soon after the application of the comfrey leaf poultice, the painful swelling subsided and rapid improvement was noted. Only a few months after the initial treatment, there was complete healing of the infected area, and the malignant ulcer had disappeared."