Apply full strength to new growth. Apply diluted as a 10 or 5 volume to ends to repigmentize previously colored ends. Stay away from sulfate shampoos.Stay away from camomile, tea tree and castille shampoos. Ecocolors is coming out with a repigmentizing shampoo in the near future made of strictly botanicals. Stay Tuned. Educate your clients that EcoColors is a low oxidative haircolor, so it is not as "pigmented" as toxic brands. ..