Bisabolol is a natural monocyclic sesquiterpene alcohol found in German chamomile essential oil. However, the extraction process can result in impurities that may affect its purity and efficacy. Some common impurities include alpha-bisabolol oxide, beta-bisabolol oxide, and other sesquiterpenes. It is important to ensure that bisabolol used in cosmetic, pharmaceutical, and food industries is of high purity to ensure safety and effectiveness.