6” wide bowl featuring stamped monsteras and gold overglaze Overglazes can be used on surfaces that come into contact with food or drink. When washing overglazed ware, you should be careful to avoid hard scrubbing. You could scrape the thin metallic layer right off the ware. Overglazed pieces can be washed in a dishwasher, but the overglaze will eventually wear off. You should generally treat pieces with overglazes like fine china, and exercise the same care in handling and cleaning.