Make fabric paint by combining acrylic paint with an acrylic medium. This medium, a polymer emulsion, combines with acrylic paint so that it works as a fabric paint on clothes, turning it soft and pliable.
Any time acrylic paint gets on clothes, it hardens, turning the material hard and impermeable. Adding an acrylic medium turns this hard paint splotch into soft fabric paint, which can be handy if you do not have any fabric paint on hand.
You can easily mix the acrylic paint and medium together using an even ratio. For instance, for 2 ounces of fabric paint, mix 1 ounce of acrylic paint with 1 ounce of acrylic medium. You can mix extra paint in a variety of colors and store extras in airtight containers for future craft projects.
Once you apply the paint to clothing, you have to heat set it in order to make the material machine-washable. There are several ways to heat set the fabric paint. The easiest method is to iron the dried paint for several minutes. You can also put the material in the oven between 250 and 300 degrees Fahrenheit for a few minutes or place it in the dryer on high for at least 40 minutes. However, make sure to heat-set it in a well-ventilated area because of the chemicals released.