How to Make Glow-in-the-dark Liquid


Although many kinds of liquids will glow under black light, there are fewer that will actually produce their own light in the dark. These liquids are called chemiluminescent, which means they undergo a chemical reaction that produces light.

Things You'll Need

  • Glow sticks
  • Knife
  • Cup
  • Luminol
  • Water
  • Beaker
  • Clear glass
  • Hydrogen peroxide

Glow Sticks

  • Get a glow stick from a Halloween-supply or camping store.

  • Crack it and shake it up to start the reaction. The stick should start to glow brightly.

  • Cut off the top of the stick with a pocket knife and pour the liquid into a cup. You now have glow-in-the-dark liquid.


  • Get some type of luminol, such as the product linked to below in Resources. Luminol comes as either tablets or a liquid. If it is in tablet form, mix it with water as the directions indicate.

  • Put a small amount of luminol in a beaker or clear glass. Be careful not to get it on your hands, as it can be caustic.

  • Pour in hydrogen peroxide until the luminol starts to glow. It will glow a bright blue for up to several hours, depending on the luminol.

Tips & Warnings

  • Blood reacts with luminol, which makes it useful in crime scenes. If you happen to be bleeding, drip some on the floor and drip a little luminol on it.
  • Don't let young kids play with this stuff. Luminol and hydrogen peroxide are both extremely hazardous if eaten, and glow sticks, though less dangerous, can't be too good for you either.

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