The Sulphate-free formula uses affinage's innovative RAV19 Complex to reinforce the bond reconstructing properties of Part 2 - Ingeniously replicating the sequence and quantity of the hair's 19 amino acids that are lost during chemical services. Nourishing Shea butter, argan oil and panthenol help to strengthen and soften the hair for supple, healthy results while colour lock technology and UV Filters extend colour life. Gentle enough for daily use, follow with Vitaplex conditioner and boost weekly with part 3 Bond Preserver.