Comfrey
The comfrey plant contains several beneficial compounds which help to revive tired, aged, and wrinkled skin. These properties are thought to be a result of a compound known as Allantoin, which is found in the root mucilage that comfrey produces. In skin care products, Allantoin helps moisturize and soften skin and acts as a keratinolytic. By softening Keratin, Allantoin allows the skin to preserve water. This makes it moister, softer, and better hydrated.