Propolis - one of the best honey bee products.
Propolis or bee glue is a resinous mixture that honey bees collect from tree buds, sap flows, or other botanical sources. It is used as a sealant for unwanted open spaces in the hive. Propolis is very good natural antiseptic.
Basic info about propolis properties and application: https://en.wikipedia.org/wiki/Propolis
And here is some info on propolis benefits: https://draxe.com/bee-propolis/