These airless pump bottles with airless pumps offer smooth dispensing through a propellant-free pathway and will prevent any waste of products. Acrylonitrile styrene comprises of 70 - 80% styrene and 20 - 30% acrylonitrile, which maintains high strength, stiffness, and chemical resistance. The airless pump collar is aluminum and the matching overcap from polypropylene with an aluminum shell. Consider these airless pump bottles and airless pump caps for products that could include makeup primer, anti-aging eye serums, and more.