Ideal for all guests looking to build healthier hair from the inside out. I recommend that you leave with the treatment on your hair and keep it in as long as possible. The longer it’s on, the longer it’s able to work, and don’t worry, there’s not chance of damage by leaving it on longer! Olaplex is a bond rebuilding treatment, not a deep conditioning treatment. It rebuilds the broken bonds in your hair from the inside out caused by thermal, environmental and chemical damage.