A purifying shampoo for colored hair with progressed thinning  Works as the first hair care step of the 3-Part treatment  Helps strengthen hair structure to prepare scalp & hair for a full thickening treatment  Contains Pro-Shield technology for increased color protection & endurance  Glyco-Shield technology removes sebum, fatty acids & dirt from scalp & hair  Deeply cleanses scalp & hair to help hair grow thicker & fuller 