Detach from sturdy suction cup base.
Fill with warm water, heating the mirror's surface.
Water drains out after shower.
Razor holder is just handy.
The problem with most fog-free mirrors is that the coating on the surface makes you feel as though you're shaving in one of those distorted fun-house mirrors. That's why we recommend this one by Ace, the same company that made your grandad's pocket comb (they relaunched a more modern line in '07). Instead of chemicals or coatings, it relies on the delicate balance of physics to combat steam. A reservoir, behind the mirror, fills with warm water that equalizes the air temperature, thus eliminating fog. $19, at Amazon.com
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