I have a shower at work and never use it. It's just too far away from the hot water heater to be useful (unless you want to wait 20 minutes for hot water ).

For most days, just a quick toweling off and some deodorant suffices. If it's really humid out, I might touch up with a baby wipe or two. Just putting on clean clothes makes me feel cleaner.

I keep a stash of all my toiletries and makeup in my desk, so it's easy to have the same "get ready" routine at work that I have at home.