CHI Color Lock Treatment 12 ounce is part of the great CHI hair products line. These hair products should be used after every chemical service performed on your hair for the best and lasting results. This unique lock in treatment neutralizes any chemicals from the hair while closing the cuticle and sealing the hair. CHI hair products also leave hair incredibly soft, shiny and manageable. CHI Color Lock Treatment can be used daily at home to detangle the hair instantly.