There are two types of chalk paint: the washable kind that you can use on the sidewalk and the permanent kind that you can use on furniture. To make the washable kind of paint, you will need to use chalk or cornstarch as a base.
To make the permanent kind, you will need something more durable such as Plaster of Paris.
Making your own paint takes more effort than running to the store and buying some, but it can save you lots of money!
Method2
Making Washable Paint with Cornstarch
1.Place 6 tablespoons (45 grams) of cornstarch into a bowl. This recipe is great for making washable sidewalk paint.[3] It is not recommended for furniture or DIY chalkboards.
If you can't find cornstarch, look for cornflour instead (but not cornmeal).
2.Slowly stir in some cold water into the cornstarch. You will need a little less than ¼ cup (60 milliliters) of water. Stir the two together with a whisk until the cornstarch dissolves. Do not over-mix, however, or the cornstarch will start to turn solid.
If you can drizzle the cornstarch water from your whisk, you're ready for the next step.[4]
3.Stir in some food coloring. You can use either the liquid kind or the gel kind. You can also use liquid watercolor instead. How much you add is completely up to you.
The more you add, the darker, deeper the color will be. Start with a few drops, and see how you like it.[5]
4.Use the paint. Dip a paintbrush into the paint, then paint designs onto your sidewalk or driveway. Let it dry and admire your work. When you are done, simply wash it away with water.
Although this paint is washable, it can stain light surfaces. Be careful!