Things You'll Need
Play-Doh that has dried out can be revived to a like-new state with a few simple household items. When left out or not stored properly, Play-Doh loses its once pliable consistency, which makes it too hard to mold, play and craft with. All hope is not lost for this hard clay-like dough when dried out; with a little effort you might be able to restore it using one of three methods.
Set the dried out Play-Doh on a flat surface.
Add water to the Play-Doh a few drops at a time, kneading the dough after each drop is added.
Continue adding drops of water and kneading until the Play-Doh reaches the desired constancy.
Water and Paper Towel Method
Dampen a paper towel with water. Wrap the damp paper towel around the dried out Play-Doh. The paper towel should cover the entire Play-Doh.
Place the paper towel-covered Play-Doh back into its container and let sit overnight.
Remove the paper towel from the Play-Doh. Knead the Play-Doh compound with your hands for several seconds until it is pliable.
Place the hardened Play-Doh on a flat surface. Make an indentation in the middle of the Play-Doh with your fingers.
Pour 1/2 teaspoon of glycerin into the indentation you made in the middle of the Play-Doh.
Knead the glycerin throughout the Play-Doh with your hands for several seconds. If necessary, add an additional 1/4 teaspoon of glycerin to the Play-Doh and continue kneading until the Play-Doh is soft once again.
Keep Play-Doh in its original container when not using it. This will help prevent the Play-Doh compound from drying out, and prolong the life of the product.