Prolong Spray is like three products in one! This product is used to extend the durability of your designs created with ProAiir Hybrid or ProAiir Ink makeup. It can be applied through a special spray nozzle cap , by airbrush PSI 35, or by dabbing on lightly with a soft sponge. Please allow spray to dry before touching. You can apply it below and above Hybrids, INKS, Solids, and water based makeup. Apply setting powder for best durability.