BetterPress Ink Reinker Wild Berry is primarily used to reink or refresh a coordinating ink pad to extend the life of the ink pad. To reink, simply add a few drops of ink from the reinker bottle onto the ink pad and spread evenly. Now it's ready to be used on the BetterPress Letterpress System! These inks are specially formulated Ranger Archival Ink made for the BetterPress Letterpress System. They are acid free, permanent, and waterproof.