What It Is:Olaplex No. 3 is the first step in repairing and maintaining hair bonds at home. Olaplex No. 3 contains the same active ingredient as the entire Olaplex professional salon services system, which works to repair broken disulfide bonds.What It'S For:All hair types.What It Does:Dramatically improves hair health, texture and strength. Addresses damaged and compromised hair. Strengthens and protects hair structure. Restores healthy appearance and texture.Free Of...- Parabens, sulfates, phthalates- How To Use It:- Apply a generous amount of Olaplex No. 3 to damp, towel-dried hair and work through from roots to ends. If your hair has product buildup such as oil or silicone, it is best to do a light shampoo first. Damp, towel-dried hair is recommended to help conserve product.- Process for a minimum of 10 minutes or more. You can leave it on up to 20 minutes if hair is severely damaged.- Rinse.- For maximum results, shampoo with Olaplex No. 4 and condition with Olaplex No. 5.About The Brand:Olaplex features first-of-its-kind, patented, bond-building technology, which relinks the broken disulfide bonds caused by chemical, thermal and mechanical damage to the hair. This formula works with every hair type, providing real, structural repair that works from within.Olaplex products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacy.