Our Eyelash Extensions Primer is used on your client's lashes before applying lash extensions. It easily removes traces of dirt, makeup, and oil on natural eyelashes, allowing eyelash extensions to adhere easily. As a result, lash extensions will have greater retention. It improves the dry times of our adhesives and neutralizes the PH of the skin. Our primer is made from a gentle formula. The primer is to be applied before eyelash extensions on closed eyes.