Shower in a bag

[nuthatch]

You guys might think I'm nuts, but you might give this a try...
For every season except hot summer, try wearing a base layer of very thin merino wool. Smartwool and Ibex both make thin 100% merino t shirts and long sleeve pullovers. Look for the terms "microweight" in Smartwool, and "woolies" for the Ibex. These things are magical! They are very soft and thin, machine washable and comfy, and they breathe. Sure you sweat into them, but it just doesn't get smelly...honest.

I second this suggestion. I never smell when I keep that wool underlayer on. Now crusty salt deposits are another matter.