Design of eyebrow is key, should be based on clients own eyebrow feature, eyebrow arch type, and symmetry for both sides is very important. Color of dye should be based on color of clients hair and skin. The direction should follow direction that eyebrow naturally grows. The depth, intensity and skills are all crucial. Color at start and end of eyebrow should be lighter and less intensive, could be darker and more intensive in between. This is essence. Connection between lightness and darkness need be smooth. Over intensive or over deep is prohibited. To those who have eyebrow inflammation and rash, it is not recommended to do permanent eyebrow.