Yes, it is waterproof and you can use it while you are showering or using shampoo. You can wear the manicure on your nails when you are swimming also. It does not get wet because of the super hold technology which makes it adhesive on both the layer either above or below. This technology does not let the water inside or even does not loosen the grip and thus it becomes adhesive. Furthermore, you can put your hands in water without worrying, your manicure will not get damaged if it is mentioned on the packet as waterproof.