Blue Eyeliner, My Diana

According to Greenwell, the answer is HOURGLASS 1.5mm Mechanical Gel Liner in Ocean Floor. Described as the thinnest, softest, waterproof gel liner encapsulated in a 1.5MM mechanical pencil, this liner offers precision accuracy and ease of application. Its formula and delivery are best for tightlining between lashes. A good choice if you are looking to accentuate your look with a dramatic flair. You can complete the look with Hourglass Caution Extreme Lash Mascara. Volumizing and Lengthening Mascara for Dramatic Lashes.