How to Harden Regular Play-Doh
- 1). Place the Play-Doh on a piece of wax paper. The wax paper prevents the dough from sticking to whatever surface it's on after it dries.
- 2). Set the Play-Doh, with the wax paper underneath, in an area with sunlight such as a windowsill. Rotate the Play-Doh every 1 to 2 hours, exposing all sides to the sunlight to ensure it dries evenly.
- 3). Allow the Play-Doh to harden overnight. Larger creations may require 48 to 72 hours to harden completely. Continue to rotate the Play-Doh, until it dries completely.