Klorane centaury extract shampoo prevents the yellowing of white or grey hair, revives its radiance and adds subtle and radiant silvery.  The Klorane Centaury shampoo is all free for all synthetic dyes.  The cornflower extract in this Klorane shampoo contains a known and constant amount of cyanocentaureine, a natural pigment scientifically proven to give gray and white hair silvery highlights. With its very gently emulsifying base and specific volume-enhancing untangling agent, Klorane Centaury Shampoo allows frequent use. Free of any synthetic dyes, Klorane Centaury Shampoo prevents the yellowing of white or grey hair, revives its radiance and adds subtle and radiant silvery highlights.   

Directions:
One application is enough.  Leave for a few minutes.  Rinse thoroughly.