Kerasilk Specialist STRENGTHENING Bond Builder 90mlOur hair is mostly made up of keratin, which is a protein that forms the basic building block of our hair fibre. It is held together by bonds that give our hair structure and shape. BOND REPAIR TREATMENT FOR HEALTHY LOOKING AND SMOOTH HAIR The Strengthening Bond Builder by KERASILK is a deep acting, intensive treatment with Biomimetic Silk and Bondamide. Our 100% vegan formula1 builds new hair bonds to repair brittle, dull or rough and even highly