Because Foy's take on the character was meant to be different than Rooney's, that meant there would be a big change in the eyebrow department. Instead of bleaching them, Merker left Foy's dark. "To darken her eyebrows, we used a waterproof mascara in black; I think it was the Make Up For Ever Aqua Smoky Extravagant Waterproof Mascara (£20)."