The present invention provides a device and method for selectively providing multiple applications of an agent formulation on the skin piercing portions of a micrÌprojection member to form an agent-containing coating on the microprojections. The formulation is dried to form a solid coating which contains the agent. A continuous conveyor strip bearing multiple microprojection members is spiral wrapped around a product drum so that each microprojection member is conveyed past a reservoir a plurality of times. The reservoir is configured to transfer an application of agent formulation onto the microprojection member each time it passes the reservoir.