Redken Two Smooth 03 - 30ml Redken Two Smooth 03 Smoothing And Strengthening Serum Duo helps to control frizz and give hair a satiny soft finish while helping to strengthen and repair. The key: combining a humidity-resistant smoothing serum with a strengthening serum featuring Redken’s patented Intra-Cylane® technology, which fills in gaps on hair’s cuticle and reinforces every strand for hair that’s smooth, resilient and seriously chic. How to: Pump once to dispense the two serums together and blend in palm of hand. Apply to damp or dry hair. For a perfectly smooth finish blow-dry with a paddle brush, smoothing the ends. Flat iron hair, making sure not to bend the ends. Finish by applying a small amount of two smooth 03 to the ends.