Wella Professionals’ revolutionary BlondorPlex formula features our Bond Builder Technology that provides up to 9 levels of lift and up to 97% less breakage* with easy preparation. BlondorPlex is great at lightening on and off the scalp and on pre-colored hair. BlondorPlex also contains anti-yellow molecules to help reduce orange/yellow undertones during lightening. *When using Wellaplex N°2 with Blondorplex, versus Blondorplex alone.