Great non-permanent hair color! [SEP] My son wanted to dye his hair blue - ummmm no.  Hair chalk was the perfect compromise.  It adds as much or as little color as you want.  It lasts one day - I would recommend washing it out each night or you will wake up with it all over your pillow.<br /><br />Super easy to apply - you can add in different shades of the same color to add dimension, do all the same color, or add as many colors are you like.  I love that this gives my kids the freedom to make their hair original but isn't permanent and doesn't have smell like the hair spray colors do.