Garcia also runs a slime product line called Craft City. She took "GMA" behind the scenes in her Southern California home to give a step-by-step tutorial on how to make the stuff.

This Halloween, learn how to make your own Ghostbusters-style ectoplasmic slime with this DIY video tutorial from the Official Ghostbusters YouTube channel.

People have even set up shops and started selling the stuff – the slime world is a booming industry, apparently. If you want to get in on the trend, here are 12 of the best tutorials out there.

Check out Bustle's video tutorial below on how to make green slime, or simply follow the written recipe directions below. You'll Need: ...

To make the slime, you'll need shampoo of any type -- though the thicker, the better -- and cornstarch. Here's how to make it: Put 1/2 cup shampoo and 1/4 cup of cornstarch in a bowl. Mix well.

Some slime-makers have come up with substitutes for the harmful cleaner, uploading YouTube tutorials of safe ways to make the toy.

Slime has become the latest craze among children thanks to Youtube tutorials, but making it isn't without its risks Comments Sean Seddon 11:54, 10 Feb 2018 Updated 12:20, 10 Feb 2018 ...