However I kept seeing people do the chalk paint fun and say that they had no problems and started to think it was my driveway materials. I really wanted to do something different for today's "first day of summer fun!" so I decided to give it another go, and in my hose test, it washed off SO easily! And it painted darkly and beautifully and wasn't runny!
So, here's my recipe:
1/2 cup cornstarch
1 cup water
food coloring as desired (probably 10 drops in each cup here)