Baldness is related to genetic factors, and these genetic factors need androgen to express. That is to say, if the female members of the family carry this genetic factor and do not have the required androgen, baldness will not be obvious. After menopause and old women's hormones decrease, their hair will also become thinner. The real problem of fighting or treating hair thinning can be solved by medication or surgery. Medical treatment needs long-term use, and such drugs are evolved from antiandrogen, which will more or less cause obstacles to men's physiology and need long-term use, so long-term calculation costs a lot. Plastic surgery for baldness can be divided into three categories: head skin transplantation (also known as hair transplantation), head skin flap transfer and scalp reduction surgery. The original intention of hair transplantation is very close to skin transplantation. The transplanted skin is transplanted with its hair follicle. When the transplanted skin grows on a new wound, these hair follicles can continue to grow hair. The doctor will extract the hair follicles below the back of the head and separate each hair follicle under the microscope. The smaller the skin with hair follicle metastasis, the greater the chance of survival and the greater the chance of hair follicle growth. On the other hand, needles and lasers are used to make many small holes in the bare skin, which are just used to place these small hair follicles. The transfer of scalp flap is to transfer some hairy scalp to bald position. Regarding the principle of skinreduction surgery for baldness, one or more operations are performed at the bald position. If the bald area is small, one operation is enough.

I hope my answer will satisfy you! In fact, baldness is not important. What matters is whether you have the ability and a good attitude! I wish your friend an early recovery of self-confidence!