Q&A for How to Make a Glow in the Dark Fluid

The tonic one.There are other recipes you can use, like glow in the dark paint, but usually they use glow sticks. If using glow sticks, it's best done at night so it lasts through the night.

Probably up to two weeks depending on how much water you use and what kind of highlighter you use.

You should be able to purchase it at any major retail store like Target, Walmart, etc. If not, you can purchase it online.

Try pinterest.com for this and other great Halloween crafts. Also, YouTube might have an instructional video for this.

A blacklight is a light that emits UV radiation. You will need one to cause the glowing effect with highlighter dye. The dye has chemicals called phosphors, which glow when they react with UV radiation.

A blacklight is a light that emits UV radiation. You will need one to cause the glowing effect with highlighter dye.

Yes. I've used it with salt, baking powder, and glue to make glow in the dark slime.

Purchase glow-in-the-dark paint, which wouldn't really need a UV light and would glow using a normal light. But keep in mind, you would have to charge it with a normal light and then turn the light off to see it glow.