I'm trying to waterproof the top edges of some wooden bathroom cabinet doors that get dripped on from the sink top. The top edges are beveled at 45 degree angle to the counter top so the wood is kind of rough rather than well finished. The Minwax polyurethane I'm using just sinks into the wood and is absorbed rather than drying to form the clear barrier I'm looking for.
Is there another product I should try-- or just keep adding additional coats of polyurethane?