A purifying shampoo for fine and weak hair. Step 1 of the Volume Boost system Gently cleanses hair and scalp Adds lightweight moisture Improves body and adds strength Helps to prevent static Collagen technology Collagen offers body, bounce and care to fine and limp hair without overburdening it – infusing every hair strand with moisture, stability and fullness. Breakthrough micellar technology Micellar technology is now included in BC Bonacure shampoos to provide a gentle, yet effective, cleansing experience without stripping away moisture. How to use Apply to wet hair. Leave for 1-2 minutes. Rinse well.