Keune Keratin Straightening Rebonding System is a professional, two-step hair treatment designed to permanently straighten frizzy, curly, or wavy hair. The product you're asking about, "Keune Keratine Straight Normal X2," refers to the "Normal" formula of this system, which is intended for fine or normal hair types. The "X2" indicates that the package contains both steps of the treatment: a straightening cream and a neutralizing cream.