Redken Extreme. Behind this electric blue packaging hide exceptional products for brittle hair. Brittle hair can quickly become a real problem to manage: major breakage, hair loss, deterioration of the hair... Our hair is constantly sensitized and stressed and can quickly become brittle. Redken's Extreme range has been designed for brittle hair and to restore strength and vitality. Thanks to the active agents present in Extreme hair care by Redken, your hair will become stronger the more you use it. Thus, they can now resist breakage and other daily deterioration. Your brittle hair will be a bad memory with Extrême by Redken.