A little goes a LOOONG way. This was great stuff to work with, easy to put on, very sharp dark color. The more layers of paint, the more grey when the color does change. Didn't work quite the way I wanted it to on the cook's aprons as I don't think they changed while they worked (which I don't get because that kitchen was easily over 100-degrees!) But it is still a really fun t-shirt feature.
Also worked great for an escape room element- heated up with hand warmers really well