Things You'll Need
Instructions
Wash the skulls with water before whitening them with the peroxide. Taking off excess debris will allow the peroxide to work more effectively during the whitening process. If the skulls have a substantial amounts of flesh on them, you can put them outside in a plastic container with holes poked in the lid so insects can remove the flesh.
Fill the plastic container with peroxide and place the skulls in it. Let the skulls soak until they reach the desired whiteness. The skulls will whiten based on how long they soak and the concentration of the peroxide.
Remove the skulls from the peroxide using tongs or protective gloves. Lay the skulls on paper towels or old newspapers to dry.