Get a couple of small dishes of water, paper towels, and rubber gloves. Water and paper towels for cleaning the brushes, and gloves for protecting hands from the dye. This isn’t necessary, but I highly suggest it.
Grab a potato and put one drop of dye directly on it. Use a paint brush to spread it around. You can either cover the entire potato in one color or do multiple colors, however you prefer.
You may have to add one more drop of dye to the potato to fully color it, depending on the size, but one drop of dye goes a long way.
Place the dyed potatoes on paper towels and let dry for 10 minutes. If you don’t want any of the dye to rub off later on when handling them, give them a light coating of hairspray and let them dry for a few more minutes. Enjoy!