Restoria Discreet Colour Restoring Shampoo is a breakthrough shampoo that gradually & gently restores natural-looking colour to grey hair. Use just like your regular shampoo, Restoria Discreet Colour Restoring Shampoo reduces greys a little bit with each shampoo, for subtle, natural-looking results. Use as your regular shampoo until you like what you see, then use a couple of times a week or as needed to maintain your look.