Click to expand Tap to zoom Nak - Structure Complex Protein Shampoo 375ml by Nak Save 0% Save % Please register or login to view prices. SKU NSCS375 A strengthening protein cleanser designed to rescue and repair damaged and fragile hair. Protects hair from temperature extremes, infuses hydrating extracts that optimise softness, condition and manageability. Leaves hair with a silky soft feel.