Does tempera paint stain

Answer

Tempera paint is washable and easy to clean up with soap and water. However, I have found that it does tend to leave a residue of color on some objects such as paint trays, and it often stays around for several washes on the paint cloths I use.

Adding a small amount of dish soap to tempera paint before use makes it easier to remove if spilled on clothing , rugs, or furniture.