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If you've ever spent time looking at your hand sanitizer bottle – and you might, now more than ever – you've probably seen the myriad little air bubbles suspended throughout the sanitizer. You might have wondered if they're meant to be there. You may wonder what purpose they serve (if any). So what's the story? Well, for one thing, the bubbles are not "meant" to be there, but they're nearly impossible to remove. That's why virtually every image you see has bubbles in it, even the official product photos published by the people making and selling the hand sanitizer. Some...

For obvious reasons, hand sanitizer is all the rage right now, to the extent that stores are experiencing shortages, the factories manufacturing it are kicking into overdrive, and even breweries (otherwise shut down temporarily) have converted their machinery to creating branded hand sanitizers. That's great and all, but what about that bottle you've had sitting up in the cupboard for a few years? Is it still good to use, or does it expire? Then there's the related question: does hand sanitizer protect you on an ongoing basis, like a glove or a shield? Let's find out. What's In Hand Sanitizer? First off, let's...

Hand sanitizer use is becoming increasingly common throughout the country, and with good reason. The trouble is, some people may find that they have an adverse reaction to the stuff. Sometimes this reaction is immediate, that is, on the first use, while other times it doesn't show up for several uses. So what's going on? Is this an allergic reaction, or something else, and can it be solved? What Causes Allergic Reactions? Allergic reactions are your body identifying a generally harmless substance as an invader and stimulating an immune response to fight it off. When the invader is a disease,...

For obvious reasons, hand sanitizer is becoming a piece of everyday carry equipment, nearly as important as a phone, wallet, or keys. The question is, are you using it properly? It's entirely possible that you're not. How Hand Sanitizer Works Hand sanitizer is generally little more than a gel-like suspension of alcohol in a substance that keeps it thick and less messy to use.  The active ingredient is, of course, the alcohol. Alcohol denatures proteins, essentially tearing them apart. When applied to your hands, it won't shred through your skin, but immersing something like a virus or bacteria in it...