Varnishes, while not inks, can be applied in a similar fashion at one or more inking stations on most presses. These coatings generally come in matte or gloss formulations. Glossy varnishes usually increase the reflectivity of the underlying ink, except when applied over metallic inks, where they temper the metallic luster. Matte varnishes give the underlying ink a buffed look and produce more traction than slippery glosses. Besides these inks and varnishes, which are used in addition to standard process colors, there are also systems based on increasing the number of process colors from four to six or seven in order to increase a printed image's color gamut.
Hexachrome inks are more vibrant because they combine conventional and fluorescent inks.
But because the percentages of fluorescent ink are small, Hexachrome inks are less susceptible than fluorescents to fading under UV light. Degrees of Separation Metallic inks can punch up your work without adding substantially to a job's cost or complexity. For a two-color business card I designed in CorelDraw, I chose a Pantone metallic background and knocked out a grayscale photo. Metallics aren't included in Corel's Pantone selector, so I chose a close approximation and indicated the Pantone number on the inkjet composite I gave to the printer along with the CorelDraw file. Cornerstone Graphics, a service bureau in Clackamas, Oregon, did the trapping and spot-color separations.