Redken Smooth Lock Shampoo (300ml) Redken Smooth Lock Shampoo gently cleanses tames & replenishes hair to deliver nourishing shine & a long-lasting frizz-free finish. The lasting smoothness you could only dream about is now a reality. The Thermo Active Polymer in Redken Smooth Lock Shampoo forms a humidity-resistant & heat activated barrier to retain internal moisture & strengthen hair. Fragrant almond oil conditions & coats the hairs surface to leave you with a silky finish & added shine.