Tested & Approved by a dozen professional salon Stylist. Low pH, sulfate free, never tested on animals. Convenient pump for ease of use in the shower. Maximizes longevity of the ALL hair defender PLEX treatment. For best results, pair with ALL hair defender PLEX Amazing Conditioner. Leaves the hair soft, shiny,pleasantly scented, with extra body. Contains some of the same selected amino acid groups found in the ALL hair defender PLEX treatment.