The Duo Macaron Cork Grease is made with a natural beeswax (non-toxic) which protects corks from moisture and enhances their smoothness. It is also made to withstand high temperatures to minimize melting. The softness it provides improves safety and efficiency when assembling the instrument (clarinet, oboe, and saxophone). The Duo Macaron Cork Grease does not emit chemical odors but, instead, comes in a variety of scents to reduce discomfort to the player.