Take control of unruly hair with the Redken Smooth Two Smooth 03 Smoothing & Strengthening Serum Duo. The ideal treatment for those who suffer with unwanted frizz, this dynamic duo works in tandem to smooth, condition & repair damaged hair types. Combining the power of a humidity-resistant smoothing serum with a refortifying serum, Redken's patented Intra-Cylane® technology works to fill in gaps in the hair's cuticle, whilst individually repairing every strand for a soft, smooth & shiny finished look. Pump once to dispense both serums, & then work into damp or dry hair.