Hair Chalking - Simply dampen a small bunch of hair and twist it. Hold the twisted hair tight against a flat surface. Dip the end of a piece of sidewalk chalk in water and draw down the strand. Twist the strand until all sides are colored. To set the color, iron with a curling or straight iron and spray with light amount of hair spray. Unlike some of the colored sprays, the chalk washes out clean even on the most porous color treated hair. So fun!!!