After only 1 use:
91% said that Moroccanoil Blonde Perfecting Purple Shampoo refreshes dull highlights*
92% said brassiness was toned down on blonde or grey hair*
*In an independent study on consumers ages 18–65, after 1 application.
Massage through wet hair and scalp. Leave on for 3–5 minutes. Rinse well. Follow with Moroccanoil Blonde Perfecting Purple Conditioner.