Black Onyx is an iron oxide base and is used in most of the black eyeliner formulations. In order to darken a color, it is recommended to mix Black Onyx with another color such as Dark Walnut, Dark Chestnut, Sterling Grey, Jade, Black Pumpkin, Midnight Brown/Black or Moroccan and Blue Corrector.

The pigment comes in a 1/2 oz. sealed bottle, packaged with a separate dispensing twist top cap.