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How To Make Glow in the Dark Mountain Dew

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The only way to make Mountain Dew or any soda glow like this is to add fluorescent dye!

The only way to make Mountain Dew or any soda glow like this is to add fluorescent dye!

Steve McAlister, Getty Images

There is a really cool video circulating the internet (I saw it on Metacafe, but it's hosted elsewhere, too) where a guy takes a 20-oz bottle of Mountain Dew™, pours all but about a quarter inch of it into a glass, then adds about a quarter teaspoon of baking soda and 3 capfuls of hydrogen peroxide to the nearly-empty bottle. He puts the cap back on the bottle, shakes it, and it glows with an incredible eerie green light. I thought.. oooh... there's an awesome Halloween project! Unfortunately, it doesn't work, or at least it didn't work for my test subject. He added more baking soda, more peroxide, more Mountain Dew. He tested the peroxide to make sure it was still active. I think this project is a dud. If you get it to work, by all means let me know. I suspect the maker of the video probably had some zinc sulfide in with his baking soda.

There are projects you can try that actually do glow in the dark. You can make glow in the dark ink. Your fingers may glow from the smoking fingers trick. (Warning: both projects involve phosphorus, which is toxic). It's much easier and safer to get a glow from phosphorescence or fluorescence, such as under a black light. Stay tuned... I did come up with a glow-in-the-dark project you can try. It's for glow-in-the-dark slime. While I'm working on the instructions, feel free to make one of the non-glowing slimes, since the glowing slime basically is a variation on one of the standard recipes.

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