Reduces grey with each shampoo. Gradually reduces grey. Subtle, natural-looking results. Gently cleans & revitalises hair. For any shade of hair. See back panel (Best for all shades from light brown to black hair. Results may vary on naturally blonde and red hair, or hair that has been previously coloured. Do not use on hair that has been lightened, bleached, highlighted or coloured blonde or with henna). Breakthrough patented technology reduces grey a little bit with each shampoo. Reduces grey a little bit with each shampoo for subtle, gradual results. Use daily until you like what you see, then regularly to maintain the look you like. Natural-looking results. How much grey you get rid of depends on how often you use it.