Collistar Pure Active Phyto Keratin Restructuring Shampoo is a 250ml intensive restructuring daily shampoo from the Italian cosmetics house Collistar. It is built around plant-based phyto keratin technology and is designed for damaged, weakened or chemically treated hair. Apply to wet hair and massage into a lather across the scalp and lengths. Rinse thoroughly with lukewarm water and follow with a matching restructuring conditioner.