Menthol, also known as 3-hydroxy-p-menthane (C₁₀H₁₉OH), is a terpene alcohol and alicyclic compound. Menthol is a white, waxy crystalline solid with a pungent odor and mint flavor. It has a soothing effect on the throat and nasal passages, and is used in medications, cosmetics, and flavorings. Menthol is extracted from peppermint oil (Mentha arvensis) or synthesized. Commercially, the most important form is l-menthol.