Limited edition jumbo 250ml size. A weekly at home treatment, not a conditioner, that reduces breakage and visibly strengthens hair, improving its look and feel. Clients can benefit from this global bestseller whether or not they receive chemical services. Pro tip prime your hair for deeper repair with olaplex's professional inspired no.0 intensive bond building hair treatment sold separately. Use no.0 as the first step in a two part at home system with no.3 hair perfector to strengthen and repair all types of damaged hair. Scientifically proven 68% more repair and 3x stronger hair when used as a two part system in just one use. Ph balance 3.5 5 1 product in prestige haircare this global best seller is an at home treatment, not a conditioner. It reduces breakage and visibly strengthens hair. Npd jan 2020 jun 2021 key benefits repairs damaged and compromised hair strengthens and protects hair structure restores healthy appearance and texture product tip use n?3 before you wash your hair and leave it on for 10 min or longer to maximize your olaplex hair repair system to use 1. Apply a generous amount from roots to ends on damp, towel dried hair. 2. Comb through once and leave on for a minimum of 10 minutes or more. 3. Rinse from hair, shampoo, and condition. Use once a week or two to three times a week for damaged hair. Olaplex products are thoroughly tested in house and by independent third party laboratories for safety and efficacy. This product testing includes the industry standard human repeat insult patch test hript, which tests for skin irritation or sensitivity. All olaplex products have passed the hript, meaning the products show no signs of causing irritation, inflammation, or sensitivity.