- Pre-inked with allergen-free ink for thin, visible lines. One string marks up to 10 lines, and the built-in cutter makes measuring quick and easy - Professional pre-inked eyebrow mapping string for precise shaping, ideal for microblading and permanent makeup artists - Great for microblading & PMU. Designed for accurate, fast, and error-free brow mapping for PMU, henna, and tattoo applications - Infused with bamboo charcoal and black pigment, eliminating the need for extra brow mapping pens and speeding up your workflow -No smudging or dripping—just clean, smooth string for precise brow mapping every time Perfect Visibility for Precise Mapping Create clean, high-contrast lines that define the ideal brow shape and ensure balanced, symmetrical results with ease. Strong, Richly Pigmented Thread Durable, break-resistant thread with intense pigment delivers bold, consistent lines professionals can rely on. Easy Tear. Full Control. Measure and tear the exact length you need with a smooth, tangle-free feed for a faster, cleaner workflow. Directions: Prepare the brow area, use string to mark desired shape, follow up with microblading or permanent makeup process.