I use this in a vaporizer, or dilute a few drops in an ointment as a chest rub when suffering from a cold. It smells better than another over-the-counter product. Highly aromatic oils which penetrate sinuses and help open up breathing passages. Also anti-bacterial and anti-viral. Made with 100% essential oils of lavender, eucaplyptus, rosemary, cajeput, cedar and white thyme in 1/2 oz. amber bottle. Do not apply to the skin undiluted.