The Olaplex No.6 works as a leave-in cream/conditioner. So you should not rinse the cream out! Apply a small amount of Olaplex No. 6 Apply Bond Smoother to damp or dry hair and work the product specifically through the medium length of hair to the ends. Then you comb through the hair and style it. Then unscrew the cap of the bottle of the no.7 and gently tap the bottom of the bottle with your index finger, this makes the bottle release a dosed drop. Add a small amount of the Olaplex No.7 Bonding Oil to the lengths and ends of the hair. Then style the hair as desired.