The miracle of Mediterranean olive oil and wheat protein are combined in the d' Olive Repair Care Shampoo to restore natural health to your hair. Independent tests carried out by internationally accredited laboratories have proven that d'Olive shampoo repairs damaged hair, deeply nourishes and strengthens them from root to tip, protecting it from split ends, regaining the moisture it has lost within 2 weeks.**Comparison of hair treated 3 times a week for 4 weeks with d'Olive Repairing Care Shampoo against untreated hair by an internationally accredited laboratory. Hydrolyzed Wheat Protein reduces hair's porosity and strengthens it from within, making your hair healthier, shinier, and easier to style. This protein increases your hair's ability to receive and retain moisture. It helps reduce breakage, eliminates frizz and tangles, and makes your hair appear fuller.