Flor Essence is not a cure for cancer, according to the National Cancer Institute. During the laboratory, animal and human studies on this product, scientists found no evidence of an anticancer effect when using the product.
Some evidence suggests that the product may actually cause an increase in tumor formation, notes the National Cancer Institute. Since the product's inception in the 1920s, evidence to support healing abilities with cancer from Flor Essence has been lacking. As of 2015, the U.S. Food and Drug Administration has not approved the product as a cancer treatment as there is no evidence to support such a claim.