More than a hair treatment, the Olaplex No. 3 Hair Perfector is a global bestseller that will provide incomparable results. This silky formula will maintain strength between salon appointments and reverse any form of damage to the hair, whether it’s caused by excessive heat-styling, chemicals from dying or everyday wear-and-tear. Specifically designed for at-home use, our patented technology relinks broken disulfide bonds that fits to any hair type. When used once a week either as a pre-shampoo or overnight treatment, this small and chic bottle will preserve a natural shine with real, long-lasting effects. Add in the Olaplex No. 4 Bond Maintenance Shampoo and Olaplex No.5 Bond Maintenance Conditioner, this creates the recipe for a hair-care routine that matches no other. Key benefits: ul.kit li {list-style-type: disc; margin-left: 15px;} Designed for at-home use Patented techology helps maintain hair\'s health & strength between salon appointments Can be used as a pre-shampoo over overnight treatment Relinks bonds in hair & reverses damage caused by heat styling, chemical treatments.