Allantoin

Lab-created allantoin is chemically equivalent to its naturally-occurring counterpart, and has been shown to be non-toxic and safe for use in a variety of cosmetic applications. In its organic form, allantoin is found in several plants, such as sugar beet, comfrey, chamomile, tobacco seed, and wheat sprouts. A popular source of allantoin is the extract of comfrey, a species of herb native to Europe.