If you're like me, your nice morning dome starts to feel like sandpaper around 5:00-complete with its own shadow. Usually, I don't worry about this because I'm heading home for the evening. And if I do go out, it's to someplace where my "shadow" won't be an issue.
On the other hand, there are evenings I may have a social event or church program to attend where my "shadow" wouldn't look so hot. Plus, there are those nights I cannot run home quickly to touch up my dome.
This may not be the case for all of us, but I belong to the gym at my office. I started stashing some disposable razors (from Shop-Rite), a can of Edge, a small tube of St Ives Apricot scrub and a bottle of Shave Secret in my locker. After my workday ends, I go to the locker room, grab a towel or two, wet my head at the sink and do my routine. The St Ives gets the "day" off my head. I shave with the Edge. I use the Shave Secret to moisturize the head after shaving. Very helpful in a pinch.
The only drawback is that your head may feel a bit tender being shaved again so soon.