To Keep Colored Inks from Skinning. - Paper and Printing Recipes / A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades - 163 - John Sawtelle Ford

To Prevent Colored Inks from Becoming Hard.How to Remove Colored Inks.

To Keep Colored Inks from Skinning.

Colored inks can be kept from “skinning” by pouring a little oil or water on the top and closing the can tightly.