Investigation into Propolis Components Responsible for Inducing Skin Allergy : Air Oxidation of Caffeic Acid and Its Esters Contribute to Hapten Formation
Propolis is a resin-like material produced by bees from the buds of poplar and cone-bearing trees and is used in beehive construction. Propolis is a common additive in various biocosmetics and health-related products, despite the fact that it is a well-known cause of contact allergy. Caffeic acid and its esters have been the primary suspects behind the sensitization potency of propolis-induced con