A: Hair transplants, whether using the strip method to harvest the donor hair or by extracting individual follicular units one-by-one directly from the scalp, will leave some scarring. If the hair is long enough so that the underlying scalp is not visible, these scars will not be seen.

The quality and density of a person’s donor hair will affect this coverage and determine how short a person may keep his hair. In some cases the back and sides can be cut to a few millimeters, in others it would need to be kept longer. Since there is no scarring in the recipient area (the front and top of the scalp where the grafts are placed) the hair in these areas may be kept at any length.

A: Widened scars can be improved in two ways: they can be re-excised to make the scar finer, or hair can be placed into the scar to make it less visible.

Excising a scar works best when the original incision was closed with poor surgical techniques. In this case, using better closure methods can improve the scar. When the scar is the result of a person being a naturally “poor healer,” a wide scar will be the result – regardless of how the incision was closed.

I often approach the problem by excising a small area first, to see if I can decrease the width of the scar. If so, I would then proceed to excise the rest of the scar. If not, I would obtain hair using follicular unit extraction (FUE) — extracting hair in follicular units directly form the scalp — and place this hair into the scar. The hair placed in the scar can also be obtained from the edges of a partially excised scar.

If a wide scar that is thickened (called a hypertrophic scar) is also excised, it will usually reoccur and may result in an even worse scar. Because of this, thick scars should be flattened with injections of cortisone prior to removing. This will decrease the chance of a recurrence.

Flattening the scar is also important to permit the growth of newly transplanted follicular unit grafts.

For more on this topic, please see the Bernstein Medical – Center for Hair Restoration web page on fixing scars.

A: Moderate exercise may be resumed two days after the hair transplant.

The main limitation is to avoid putting direct pressure on the donor area and to avoid stretching the back of the scalp (neck flexion) as this will increase the chance of stretching the donor scar after a strip procedure.

There is no such limitation with follicular unit extraction (FUE). However, in general, contact sports should be avoided for at least 10 days with FUE and a month after a strip procedure.

A: With body hair transplants, the hair quality is poor and there can be a significant amount of scarring where the hair is harvested, so we are not recommending it at this time.

A: When the scalp is tight, it can be useful for either the first or the second hair transplant.

Keep in mind, however, that the scalp will naturally stretch between hair transplant procedures, so that if exercises were not needed for the first procedure, they will generally not be needed for the second.

In our practice, we generally wait one year between hair restoration sessions so that we can see the full cosmetic impact of the first procedure and give the scalp laxity a chance to return to normal on its own.

In addition, there is a risk that active massage after the first procedure may widen the donor scar. Therefore, before considering massage before a second hair transplant, make sure that enough time has elapsed between procedures so that stretching of the scar will not be a be a problem.

In general, since the scalp will normally continue to relax for up to a year after a procedure, it makes sense that when there is a tight scalp, one should wait at least a year before considering the next hair transplant session. If massage is contemplated, it should be started one year after the prior procedure. This will give the scalp a chance to loosen naturally and will ensure that the massage will not stretch the donor scar.

In my opinion, it is a mistake to plan hair restorations sessions too close together in patients where scalp laxity is a constraint.