This reconstructing shampoo gently cleanses hair while enhancing elasticity, strength and shine. Contains Quadramine Complex, an exclusive blend of low molecular weight and size proteins (MWS 150-2500). This balance of 19 essential amino acids (the building blocks of hair) adheres quickly and effectively to ensure maximum protection and reconstruction from the cuticle to the cortex. Color-safepH 4.5 to 5.5. Made in USA.