Wiping a foggy bathroom mirror with shaving cream prevents future steam
Coating a bathroom mirror with a thin layer of shaving cream creates an invisible barrier that prevents water vapor from condensing into fog during hot showers.
Shaving cream acts as a powerful surfactant that lowers the surface tension of water. When you wipe a small amount across a mirror and buff it clear, it leaves behind a microscopic film. This layer prevents moisture from forming individual droplets, which is what typically creates that cloudy, opaque appearance on glass.
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