The tube for the Chameleon Concealer is a new type of airless vacume tube. There is no pump inside. The tube pushes the product up from the bottom via an airless vacume system. 

This is used so that as little contamination from outside bacteria enters the tube as possible. On a new tube it takes several pumps to begin with to get the product to the dispenser head. Once its there it pumps out on the first pump each time. 

It is designed only to pump out small amounts each time for controlled use so that product is no wasted.