I was surprised at how long these actually held up if treated carefully. If you don't submerge these in water and simply wipe with a damp paper towel to clean these hold up for more than one use. Of course this would mean you would be using a waterbased medium. For oil based mediums if you simply wrap the palette in plastic wrap well and store it properly it will hold up for a while as well. Very economical alternative to the those flimsy plastic or wax paper palettes. I'll be getting more!