OLAPLEX N°.3 Hair Perfector has the same active ingredient that is in the in-salon treatment products but is formulated for the client to use in between services to maintain that bond multiplying/building process. It is NOT a conditioner and should not be applied in the shower like a conditioner. How To Use Apply a generous amount to towel-dried hair and comb through.Leave on for a minimum of 10 minutes. Keep in mind, the longer it's on, the more effective it is.Rinse, shampoo and condition.