Monster High Voltageous Hair Frankie Stein Doll Style Frankie Stein doll's hair with a creepy cool UV effect using the materials included within this set Young stylists can use the Monster High UV light tool and included stencils to create a voltageous look The daughter of Frankenstein has uniquely treated hair so that the white streaks on her head and the two colored hair extensions included within the set are UV light sensitive Select a stencil and slide it into the UV light tool The design is transferred to the hair for a customized design