Montegrappa’s chemists have developed a formula made of the finest ingredients available. The science is as involved as in creating a fine scent, the recipe as complicated. Every ink in the Montegrappa collection is a composite of acid, colorant and tincture, glycerine, polyester ethylene glycol, edible Arabic resin, and carbamide/carbonyldiamide. Because of Montegrappa’s concern for the environment, the inks do not contain dyes nor any other ingredients of animal origin such as carmine, beeswax, shellac, and other insects or animal-derived glycerin. There are no animal products whatsoever used in the processing of the ink, such as the commonly used isinglass or gelatin.