Click to expand Tap to zoom Nak - Structure Complex Protein Shampoo 1000ml by Nak Sold out Please register or login to view prices. SKU NSCS1000 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.