Black Knight: A dark dazzler from butter London, this glitter fusion contains black, pink, blue, and silver suspended in a black base. The Black Knight is a beloved Monty Python character from The Holy Grail. The High Price of Beauty? We don't think so. Butter LONDON is a 3 Free Company. What is 3 free? Most major nail companies use toxic chemicals in their products. Why? Because they are cheap and unmonitored by the Food and Drug Administration. They are also extremely hazardous to humans, causing cancer, birth defects, neurological damage, and a host of other serious illnesses. Butter LONDON products contain NO Formaldehyde, NO Toluene, and NO DBP (Dibutyl Phthalate). We believe in Colour, not Carcinogens. Made in USA.