The hard ceramic which dulls your knife can also be used as a steel to to correct the edge again, just run the blade down the side of the blade alternating sides like you would with a steel and it'll restore most of the edge, I just tried it with a vic that is sharpened at 10degrees per side, after eating I couldn't shave, after running it down the plate, it could shave with ease, but a bit of the tip was blunted a bit, but the steel is pretty soft.