DESCRIPTION A concentrated treatment that strengthens the hair from within, reducing breakage and improving its look and feel. Nº.3 Hair Perfector is not a conditioner, it’s an at-home treatment that contains the same active ingredient found in all professional Features & Benefits: Addresses damaged and compromised hair Strengthens and protects hair structure Restores healthy appearance and texture Formulated WITHOUT: Parabens Sulfates Phthalates 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.