I've seen this going around and around on a bunch of different sites. I know how it turns out, but because of its continuing popularity, we decided to do an official test and post it up.
The Original Pin
How to make Mt. Dew glow. The video looks convincing. Looks like fun. But this is the result:
"There's nothing in that picture!" you say. Wrong...my husband is in that picture holding the "glowing" bottle of Mt. Dew. Seriously. As you can see...it doesn't glow! Just look at the Cam-man's disappointed and disgusted face below when the flash was used.
Every time one of my friends posts it I tell them, "Don't bother, it's a hoax. It doesn't work." Slowly the word is getting out. Mt. Dew does not glow when you add baking soda and hydrogen peroxide. According to snopes.com, "The results claimed in the original video were likely created by the surreptitious introduction of a glow solution into the Mountain Dew bottle, either through off-screen manipulation or via a substitution covered by editing."
We were finally able to make it glow by cutting open a glow stick and pouring the liquid in the bottle. The exuberance lasted about 10.2 seconds. Then it just wasn't cool anymore.