Wintergreen oil is an essential oil derived from the leaves of the wintergreen plant, primarily Gaultheria procumbens. It has a strong, minty aroma and is commonly used in aromatherapy and natural remedies. The oil contains a compound called methyl salicylate, which gives it its characteristic scent and therapeutic properties. This oil is often used for its potential pain-relieving effects, making it popular in topical applications for sore muscles and joint discomfort. Additionally, wintergreen oil is sometimes found in products like toothpaste and mouthwash due to its flavor and antibacterial properties.