While most of the brands we love are Earth-friendly, this may be the most tree-hugging beard oil on our list. US Organics, which is registered with the Leaping Bunny Program, uses only premium-grade organic ingredients. There are no chemicals, no additives, and no preservatives. As for the oil, the tea tree and peppermint give it a clean, minty scent. The blend possessed natural antimicrobial properties that help protect against bacteria, viruses, fungi, and other microorganism growth in beard. For big-bearded dudes, that is pretty important. It also helps keep your skin flake-free.