A variety of printing ink produced with an additional quantity of varnish that allows the ink to dry with a highly glossy finish, typically by oxidation and polymerization. High gloss inks achieve their best results when used on paper (typically coated paper) that allows a high degree of ink holdout, or does not allow rapid penetration of the ink vehicle into the paper surface. Rapid drainage of the fluid vehicle hampers oxidation and reduces printed gloss. The application of heat to expedite ink drying also works to reduce printed gloss. High-gloss inks are manufactured for use in both letterpress and offset lithographic printing processes.
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