Regardless of the type, all type of tiles in bathroom are likely to get damag as a result of high amount of moisture. When wall tiles in your bathroom gets damaged or weathered , you should replace them with new ones if you can afford it.
If you want to have a nice looking bathroom interior, you should replace damaged tiles with new ones. You have tens of options with regards to wall tiling material. Additionally there are varioustile designs and patterns you can prefer. The sample seen in the picture is a partly application of stone pattern wall tile.
Photo via: carlaaston.com