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: I perform FOX tests on all patients when I am considering a FUE hair transplant. I do not routinely perform FOX tests before repairs (or on eyebrow transplants) where the number of grafts is relatively small.

The purpose of FUE is to identify those patients in whom FUE is inefficient — i.e. there is a greater than average risk of damage during the harvest. If this is the case, I would not perform the hair transplant since even slight inefficiencies create a significant problem when thousands of grafts are transplanted.

Remember, compared to Follicular Unit Transplant (FUT), FUE is a relatively inefficient procedure. Even when a small FUE hair transplant is performed (i.e., in a Norwood Class 3) we have to anticipate that eventually the person will need a large amount of grafts, so a FOX test is still important.

However, when the total number of grafts is small, such as in scar revisions or eyebrow restoration, small inefficiencies are not as important.

In addition, with repairs, the donor area is altered so that extraction in different areas may be very be different, rendering a FOX test in scar revisions far less useful.

Finally, if a FUE hair transplant is started, but then aborted due to extraction difficulties, the patient must either be reverted to a strip (which was not the preferred means of harvesting or a FUT would have been planned to begin with) or the patient will be left with a partial procedure – both less than ideal situations. However, if a FUE repair has to be aborted due to the inability to efficiently harvest hair, no harm was done; we just won’t be able to achieve our goal.

A: Hair will grow in the scar but, as you allude to, the problem is often the abnormal hair direction rather than the scar itself.

Besides adding hair to the scar, if one transplants hair adjacent to the scar in a direction that causes it to lie over the scarred area, the visual affect of the “Red Sea” effect can be lessened.

How much improvement you achieve with the hair restoration will, in part, depend upon the amount of hair available to be transplanted (and the skill of the surgeon).

A: Although dermabrasion can flatten elevated edges, it will not eliminate the round, white circular scars that results from old punch graft hair transplants.

The scarring in these procedures goes all the way through the dermis to the fat. Dermabrasion can only go down to the upper part of the dermis without causing further scarring.

Graft excision with suturing removes the plug as well as the underlying scar and will eliminate the tell-tale circular marks of the older hair restoration procedures.

A: It will significantly reduce the scarring.

The reason is that the round disc of scar tissue at the bottom of the graft from prior plug hair transplants will be removed and the normal skin edges will be brought together resulting in a barely perceptible fine line scar.

See the Graft Excision in Hair Transplants page on Bernstein Medical – Center for Hair Restoration website.