The Propolex propolis liquid was developed by the Sinicare team, to cater for those who like to implement propolis into their daily nutrition and as natural daily medicine. This item's main ingredient is propolis extract. Bees produce a compound called propolis from the sap on needle-leaved trees or evergreens. When they combine the sap and beeswax, it creates a sticky, greenish-brown product used as a coating of the hive as a protection from external bacterial, viruses and fungus. For thousands of years propolis was extracted and utilised for those antibacterial properties.