Hairline adjustment is useful. Hairline adjustment is very effective in improving the forehead, forehead height and M-type alopecia. Before the operation, the whole hairline will be designed, and the transplanted hair will be artistically planted in the missing part according to the natural growth direction of hair. Because it is taken from its own hair follicle, the regenerated hair is real and natural, and will not fall off, and the effect is very good.