Propolis is the resinous substance collected by bees from the leaf buds and bark of trees, especially polar and conifer trees. Bees used the propolis along with beeswax to construct their hives.What is its function ?Bee propolis may help to prevent seasonal conditions. It may also help to protect cells from free radical damage.Active Constituents:Research suggests that propolis is rich in natural antioxidants, bioflavonoids, resins, and pure essential oils. - 30 (size 0)