I think our boxwood is sunburnt
How do I know if it can still be revived? It appears to browner every day. It started out on one side, then we moved it into a somewhat shady area and it is becoming more brown. The other boxwood is a little brown but doesn't seem to be as sensitive as the one we are worried about.
Though the Boxwood like sunshine they need to be protected from the hottest part of the day as the summer heats up.
Feed and water the plants as normal.
Give them time to recover, then you can prune up the plants to remove the dead material.
Here are a few links for you.