Gel Diy Frying Graphic Tee Gel/Cream?

Graphic Tee Gel/Cream? - gel diy frying

I clicked on the DIY network and show how a graphic tee that some form of cream or gel that can be placed on a printed image on your computer and transfer the images on the T-shirt.

Silly me, I forgot to write what the name of the substance estimated called.Any help and would like to thank you in advance:)