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Thanks to allantoin, a substance it contains that causes cells to multiply, healers have used it since ancient times to set bones, close wounds and treat burns.

Pro Vitamin B keeps skin moisturized and nourished, while Allantoin soothes and calms flare-ups.

Dr. Tuhina Neogi, a rheumatologist at the Boston University School of Medicine, explained that humans lack the enzyme uricase, present in most other animals, and thus are unable to convert urate into allantoin, the soluble end-product of purine metabolism.

Wounds and ulcers promptly heal under the bland influence of a remarkable chemical, allantoin, which such urine contains.

Allantoin also occurs in beets and bruisewort, favorite folk remedies for cuts and ulcers.