Propolis occurs naturally in honey, bees make propolis from tree sap and wax to help seal off their hives. Propolis has a long history of medicinal use, and is sometimes added to lip gloss and other cosmetics. Propolis is a very complex mixture that varies according to the source it comes from. At least 180 different compounds have been identified so far in propolis. Propolis offers antiseptic, antibiotic, anti-fungal, and even antiviral properties. With its antiseptic properties it provides a hospital clean environment for the rearing of a brood.