My blonde daughter suffered with green hair while I tried everything imaginable to remove it. Vinegar, clarifying shampoos, mayonnaise, anything that people suggested. I was finally given a packet of this amazing powder to remove the green in one treatment! WOW! I now keep the Malibu C Swimmers Wellness Remedy on hand to give to others as they encounter the same problem. I also use it occasionally to rejuvenate my own hair. Thanks for an awesome product!!