Olaplex No.6 Bond Smoother a concentrated leave-in smoothing cream for all hair types especially coloured and chemically treated hair. No.6 strengthens, hydrates, moisturises and speeds up blow dry times while smoothing. Eliminates frizz and flyaways for up to 72 hours. Apply a very small amount to damp or dry hair, concentrating product on your mid-length to ends. Comb through and style as desired.