As a medicinal herb, Indians of the Southwestern desert regions historically used the sap as a sunscreen.
Warning: Rare reports of serious liver disease have been associated with ingestion of chaparral. Seek advice from a health care practitioner before use and, in so doing, inform them if you have had, or may have had, liver disease, kidney disease, frequently use alcoholic beverages, or are using any medications. Discontinue use and see a doctor if vomiting, fever, fatigue, abdominal pain, loss of appetite, or jaundice (e.g.dark urine, pale stools, yellow discoloration of the eyes) should occur. Not to be used during pregnancy.