- Luminescent gel pens for hand lettered art, party invitations, and more - Non-toxic, smooth-flowing, waterbased gel ink - Tight-fitting caps keep tips from drying out between uses - Great for decorating light and dark surfaces Draw details that glow like stars in the night sky with Karin DecoGel MilkyWay Pens. These refillable pens feature non-toxic, waterbased gel inks that flow smoothly to create luminescent swirls and pastel accents ideal for hand lettered art, party invitations, and more. The highly pigmented inks work well on a variety of light or dark substrates, including cardstock, paper, glass, metal, foil, and stone. Adjust stroke thickness simply by adjusting the pressure and speed with which you’re drawing. The inks’ special lightfast formulation ensures your drawings will retain their vibrance over time, and tight-fitting caps keep the tips from drying out between sessions.