Wipe the mold with a dry paper towel. If any of the color mixture remains, use a damp cloth and dry thoroughly. Another option is to allow the mixture to dry and just peel it off the mold. DO NOT immerse in water to clean the mold. Before starting a new character, you will need to clear the vent holes in the mold. You can use the squeeze tool or a toothpick to clean out any excess residue.