This is a fun product that enables you to streak your hair effortlessly. I tried "electric blue" and it worked incredibly well for tipping curls.

Pros...
It washes out with your next shampoo.

The color is housed in the bottom of the container. You simply squeeze until the color appears in the comb applicator. Comb through your hair to distribute and you are done.

The cons... the blue works best for light colored hair.