Apply No. 50 Serum™ Collagen Veil Anti-Aging Primer with clean fingertips onto clean skin, or over moisturizer, before makeup application. Use either the pump or dropper, both are included. A small amount is sufficient for your entire face, neck and under eye area. Wait a few moments for the serum to dry before applying foundation. Can also be worn as a daily moisturizer, or over the top of your night creams to maximize their results while you sleep!