I used Prime for Perfection and it lightened the middle part of my hair but didn’t lighten the ends. Why?

Results that include darker ends after using Prime for Perfection can happen if hair is longer and has been colored repeatedly, allowing the color to build up on the ends. You may need more than one application of Prime for Perfection to remove all the permanent color at the ends. Simply reapply to the darker areas only and the hair should lighten.