If you have access to a stovetop and large pot, you can make your dye bath on the stovetop and turn the burner to low. Keeping the water hot throughout the dye process will make the final color darker. [3] X Research source

You can find a black fabric dye online or at your local fabric store.

For example, if you’re dyeing 3 pounds (1. 4 kg) of fabric, you would use 1. 5 cups (350 mL) of salt.

You can find dye fixative online or at your local fabric store.

If you’re worried about your fabric shrinking in the dryer, hang dry it instead.