1.ANTI-DRY INK - With improved anti-dry formula, the new eyebrow pen has a much longer product life cycle and more stable usage performance. 2.UPGRADED CAPACITY - A significant upgrade on the capacity (3MLs) comparing to the original 5ML eyebrow pen, brings 3 times longer usage out of each 1 eyebrow tattoo pen, more durable and cost-effective. 3.REALISTIC HAIR LIKE STROKES -The tiny fork tip of eyebrow pen can create thin and precise lines that look exactly like human hair! 4.LONG LASTING - Waterproof, sweat-proof, and smudge-proof. Stays on all day in the place and lasts up to 24 hours if not rubbing the brows too hard.