How to chalk dye your hair!

You'll need:
Soft pastel chalk or oil pastels(They work better). 
A small spray bottle filled with water
A flat iron or curling iron
Rubber gloves
A old towel or t-shirt you don't mind getting color on.

Step 1: Spray a 1-inch section of hair with water. You don't need to soak the entire strand, just go as high up as you want the color to be.

Step 2: Color on your hair with one of the pastels. I recommend choosing about three colors, and putting one at a time in your hair. Start with the lightest shade first, since, as you can see, the color gets all over your gloves and you'll end up with a muddied version of the same hue throughout if you go dark to light.

Step 3: Wait for your hair to air dry. 

Step 4: Using the flat iron, go over each colored strand. This sets the colors in your hair, so it will last longer. Then brush and style however you normally would!

It usually will stay in until you wash your hair. It comes out with Shampoo,but if you have blonde hair or lighter hair then it should stay in for a week.Depending on how often you wash your hair.