A: A hair transplant should be considered in an area of thinning when:

• The area has not responded to medical therapy (finasteride 1mg a day orally and minoxidil 5% topically for one year).
• The thinning is significant enough that it can’t be disguised with simple grooming (i.e. is a cosmetic problem even when the hair is combed well).

Other factors that are important include:

• the age of the patient
• the donor supply
• whether the thinning is in the front of the scalp or in the crown

A: The crown can be transplanted first in patients who have very good donor reserves (i.e., high density and good scalp laxity). Otherwise, after a hair restoration procedure to the crown you may not be left with enough hair to complete the front and top if those areas were to bald.

Cosmetically, the front and top are much more important to restore than the back. A careful examination by a trained hair restoration surgeon can tell how much donor hair there is available for a hair transplant.

For more information on this topic, see my publication on surgical planning of hair transplants, “Follicular Transplantation: Patient Evaluation and Surgical Planning.”

A: If you have thinning in such a broad area, most likely your donor area is also thin and you would not be a good candidate for surgery.

An examination can determine this and also determine if there is some other cause of your hair loss other than genetics.

A: Hair loss is due to the action of DHT (a byproduct of testosterone) on hair follicles that cause them to shrink and eventually disappear (the process is called miniaturization). The follicles on the back and sides of the scalp are not sensitive to DHT and therefore don’t bald (miniaturize).

When you transplant hair from the back and sides to the bald area on the front or top of the scalp the hair follicles maintain their original characteristics (their resistance to DHT) and therefore they will continue to grow.

A: Joe Biden — former Senator from Delaware and now the Vice President of the United States — apparently had a hair transplant many years ago using the older hair restoration techniques. This included not only transplanting hair in large plugs (corn rows), but using them to create a broad frontal hairline; a design that generally does not look natural as a person ages.

Also, the older grafts were transplanted in a vertical orientation giving a sprout-like, unnatural appearance.

The use of large plugs and the inefficiencies of the older procedures waste a considerable amount of donor hair, leaving Senator Biden with a dense rim of hair in the front part of his scalp and little coverage behind that.

The repair strategy would consist of removing the larger plugs, microscopically dividing them into smaller grafts (individual follicular units of 1 to 3 hairs each), and then placing the smaller grafts in a more forward direction and in a more natural distribution. This involves using the 1-hair units to soften the frontal hair line and the 2- and 3-hair units to extend the transplant further back on the scalp.

In addition to the hair transplant repair, Biden received significant cosmetic improvement from the natural graying of his hair over the years, as this tends to make the hair appear fuller and any irregularities less noticeable.