The development technology can be divided into two types, namely marked technology and unmarked technology. As the name implies, scarring technology will leave scars, and the price is relatively cheap, generally about 7 yuan per hair follicle. Traceless technology is a minimally invasive technology, which will not leave any scars and has a high survival rate of hair follicles. The price of seamless technology is around 20 yuan per hair follicle.