-A revolutionary & customizable hair treatment of a two-component system-Works with Kerasilk Keratin Shape Intense 1 for curl reduction for healthy hair-Also works with Kerasilk Keratin Shape Medium 1 for soft curl reduction for healthy hair-Developed with Kerashape Technology consisting of Glyoxylic Acid Keratin & Silk Proteins-Penetrates hair structure & creates a matrix of new keratin bonds-Transforms unruly overly curly or uncontrollably frizzy hair into silky hair-Unveils softer smoother & more manageable hair-For professional use onlyProduct Line: KerasilkProduct Size: 500ml/16.9oz