TINTED HAIR - RETOUCH AND REGROWTH. Apply the colour to the roots (leave for 10 min.). To ensure a uniform effect then wet the hair and lather the colour previously applied to the base (roots) to the length and ends of the hair. Leave for a further 10 min.
Does the word 'regrowth' mean that the product will cause new hair to grow or does it mean applying the product to the roots?