The Olaplex No.3 Hair Perfector is designed for at-home use and provides continuing protection from ongoing damage. It is best to apply to towel-dried hair. If build-up is present such as oils or silicones, shampoo and towel dry before application for best results.

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.
 
This is NOT a conditioning treatment OR a leave-in treatment. It is meant to be shampooed out of the hair. No.3 must process a minimum of 10 minutes. If hair is compromised, 20+ mins is recommended. Once a week is suggested for healthy hair. For those with compromised hair, we recommend 2-3 times a week in combination with your favorite moisture and protein treatments where applicable.