How to use cornstarch to thicken acrylic paint

tempera image by Edvin selimovic from Fotolia.com

Tempera paints are often runny because they are water-based. This is not a problem for your everyday craft projects. But if you want to create a painting with some depth you will need to thicken the tempera paint before using it. Fortunately, you can use a common household pantry item to thicken your tempera paint.

Mix 2 Tbsp of cornstarch in a small pot with 1 1/2 cups of water.

Heat the cornstarch and water mixture over low heat. Stir until the cornstarch is completely dissolved in the water. Remove it from the heat.

  • Tempera paints are often runny because they are water-based.
  • Mix 2 Tbsp of cornstarch in a small pot with 1 1/2 cups of water.

Wait for the cornstarch and water mixture to cool to room temperature. Add the mixture to the tempera paint of your choice a little bit at a time. Stop once you reach your desired thickness.

Store any extra cornstarch and water thickener in an airtight container.

×