First of all, in the use of tools, we use "single needle" or "three needles" to tattoo eyebrows. With the help of electric tools, we can stab the pigment into the skin one by one, and the operation process is like a tattoo. In eyebrow embroidery, we combine 12 or 16 needles into a 45-degree oblique angle, and we can stab more pigment into the skin at a time, all by hand. I suggest you go to a regular medical institution, so that you will feel more at ease. Wu Hanyou Mei Jiali plastic surgery, according to friends, is not bad, you can learn. hope this helps ...