Work product from ends towards scalp avoiding the last 1-2", leave on hair for 3 - 5 minutes, and then rinse thoroughly. To make sure the product is disbursed equally run a wide-tooth comb through your hair before letting the product sit.
For a deep treatment apply on towel-dried hair and leave on for 20 minutes. You can use it with a cap and heat it under a dryer if you like for deeper penetration.