Our 1-oz highly concentrated fragrance oils are great for any wax warmer or oil burner. Concentrated fragrance oils allow you to skip the wax cleanup and get straight to the fragrance. You can also add this oil to your diffuser. All oils are packaged in a 1-oz bottle except for the Sinus Relief fragrance oil which is packaged in a 1/2 oz. bottle. Note that a little goes a long way!