Introduction: Glowtubbing - Glow in the Dark Hot Tubbing

One cool Boston night tEps set up a kiddie pool filled with nice warm water. A small spoonful of UV reactive dye and it was transformed into a radioactive pit of joy. I will not suggest you do this yourselves. But it is easy to do, get some nontoxic UV dye that they use for flow monitoring in rivers and add it to a pool of your choosing. Bring out your UV bulbs and have fun. Remember to keep it out of your eyes and mouth.

This was a bad idea done by professional bad idea handlers. Please enjoy our mistakes and never do what we did.

As an aside, this type of dye can be used to make invisible spy ink either for silkscreening / pen type applications. Simply find the right binder (clear waterbased/acrylic gel) and write. To see it put it under any UV light source, a bill checking flashlight for instance.

Comments

author
Oroka (author)2009-06-10

So, what bad things can happen if I get this in my eyes or mouth?

author
lamedust (author)Oroka2009-06-10

Well, the company we got this dye from said it was non toxic. But some people had irritated eyes the next day.

author
zs (author)lamedust2015-04-19

non-toxic doesnt always equal no adverse effects. cool video though.

author
Camping_DIY_Chick (author)2011-12-02

Putting a few non toxic highlighter ink wells in a mesh bag and letting them soak in the hot tub for half an hour or so would probably work without a significant risk of adverse reactions. How many it would take to how much water to make it glow well is the real question.

author
westfw (author)2009-06-10

The usual "tracker" dye is disodium Fluorescein, which is D&C 8. It's used medically (eyedrops to detect corneal abrasions, injected for assorted other purposes. Presumably in rather dilute solutions (Fluorescein is apparently detectable by fluorometer at concentrations down below 0.01 parts per billion!)) So it's pretty "non-toxic." Wikipedia's article implies that allergic-style reactions are pretty common, though.

There are usually people selling Fluorescein on eBay...

author
darwin (author)westfw2009-06-11

I don't think it was fluorescein. Last time I got fluorescein in my eye, it didn't burn, but I blacked out within seconds. This time it burned and I didn't black out, and I was splashing around in this tub for over an hour.

author
westfw (author)darwin2009-06-11

I just said that it was particularly common. If *I* had blacked out after getting fluorescein in my eye, *I* wouldn't be splashing around in glowing hot-tubs!

author
darwin (author)westfw2009-06-11

Good point. I guess I earned my nickname for that one . . . and I just wanted to point out that it's easy to get non-fluorescein stuff.

author
xboxteen01 (author)2009-06-10

The show Time Warp used a dye that was safe to have in your mouth. Not sure what made it safe though

author
lamedust (author)xboxteen012009-06-10

Hmm, well, this stuff was non-toxic too, the mouth stuff didn't seem to bother us too much, the glowing tongue was weird though, but in our eyes it burned. So hopefully, both us and the Time Warpers were using the same safe dye.

author
implaxis (author)2009-06-10

I believe there is a makeup that comes in different colors that should be safe. It's probably available at a costume shop or somewhere like Spencer Gifts.

author
crapflinger (author)2009-06-10

that's ridiculously disorienting trying to figure out what way the guy is pointing in the video hehe

About This Instructable

6,053views

15favorites

License:

Bio: Bilal Ghalib is interested in doing things that surprise him and inspire others. Let's create a future we want to live in together.
More by lamedust:From Crap to Craft - How to Take Advantage of Disadvantage Robotic Music Player and Sequencer With LittleBits AKA Fruityloops IRLProsthetics Modification for Pain Relief of Pressure Points
Add instructable to: