Hello, water does not cause any harm, but hand soap can damage the product coating over time, although not in a short time. It is not suitable for use in the bathroom. It has a long lifespan except for the intense acid-base chemical (such as bleach, perfume, cream) or the high skin acid effect that is rare in humans. However, it is a matter that is highly related to personal use. It is long-lasting when used carefully and cleanly, but its lifespan can be shortened in careless and negligent use, although the product is very durable. We wish you a good day. . � � � �