Descriptions:Airless Cosmetic Pump Container allows you to carry it easily and use it with a simple press. It is designed in a portable size, making it perfect to carry & convenient to handle for daily life trips.It adopts airless pumping technology to prevent air contact, designed to preserve the shelf life and freshness of your favorite skincare products. These pumps operate with a vacuum instead of a straw so you can use every drop of product.Usage:You do need to fill the jar with the desired product first to create the vacuum.When the pump is pressed, a piston at the bottom of the container pushes the product up and out the top.