Eyebrow embroidery pen is different from other ordinary permanent make-up tools. It is not done by a machine.
The pigments are manually placed into the skin. The microblading manual pen is equiped with sterile packaged blades ("slope" style, in U-shape or curvy.).
The blade glides with gentle pressure over the skin and causes a fine cut. The cut is as fine as a paper-cut and you can hardly distinguish it from real eyebrows.