"At Nexxus, we understand that the hair structure consists of up to 90% protein, so we believe helping hair return to its optimal state means treating it with protein at high levels. Nexxus scientists set out to find inspiration from precious ingredients that could help seal severely damaged hair using a cutting-edge approach to protein research called Proteomics. The Nexxus Keraphix Healing System for Severely Damaged Hair, with Keratin Protein and Black Rice, heals visible signs of severe hair damage. Rice has long been a storied secret of strong healthy hair for women of the Huangluo village in China, where fermented rice water has unlocked the key to growing long, luxurious hair. Women of the village go to great lengths to preserve their hair by washing it in fermented rice water and often undergo just one haircut their entire lifetime. Extensive testing showed that Glutamic Acid is a key amino acid lost in hair when it is exposed to severe damage.