If your Play-Doh has been out for an extended period of time (more than a couple months) and has fully hardened, it may not be possible to revive it.
Try kneading one-half teaspoon of glycerine into the Play-Doh to help moisten it further. [1] X Research source
2 ½ cups of water 1 ¼ cups of salt 1 ½ tablespoons of cream of tartar 5 tablespoons of vegetable oil 2 ½ cups of flour Food coloring
