At present, drugs can only stabilize hair and delay hair loss, and can't make the fallen hair grow back. If you want to increase hair density, you can treat it with hair transplantation.
CCTV's Healthy Road Causes Hair Loss Concern —— Dr. Xu Xia, a Hair Transplant Expert
CCTV-2 "The Road to Health" broadcasts the program "What do you know about hair loss troubles?" Experts explain the principle and postoperative effect of hair loss prevention and hair transplantation. You can have a look:
Baidu search: the road to health Xu Xia
Or online consultation: Beijing Sino-German Hospital