I’ve noticed that some public bathrooms now have hand dryers with cool blue lights. Are they more hygienic than regular hand dryers or even simple paper towels? The blue light itself doesn’t have any hygienic properties, but other features of these new-generation hand dryers, if present, might—at least in theory. Since the Covid-19 pandemic, the […]
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Restroom Hand Dryers: Does the Blue Glow Mean Anything?

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