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By Robert M. Bernstein, MD

When Dr. Rassman and I coined the term Follicular Unit Extraction (FUE) in our 2002 publication “Follicular Unit Extraction: minimally invasive surgery for hair transplantation” we used the term to imply that this new procedure was less invasive than a traditional FUT/strip procedure ((Rassman WR, Bernstein RM, McClellan R, Jones R, et al. Follicular Unit Extraction: Minimally invasive surgery for hair transplantation. Dermatol Surg 2002; 28(8): 720-7.)), ((Bernstein RM, Rassman WR, Szaniawski W, Halperin A. Follicular Transplantation. Intl J Aesthetic Restorative Surgery 1995; 3: 119-32.)) Recently, FUE has been marketed by some practices as being non-surgical and this has given rise to the procedure being performed without physician participation (in some practices even without physician oversight).

The fact is that the FUE procedure is more than just the extraction of follicular unit grafts. The surgeon must first create an incision with a punch tool before the grafts can be extracted. The punch tool can be manually operated, automated or robotic. ((Bernstein RM. Integrating Robotic FUE into a hair transplant practice. Hair Transplant Forum Intl. 2012; 22(6): 228-229.)) The extraction can be performed with forceps or suction. This process of incising and then extracting grafts is a surgical procedure and is, therefore, better described by the word excision.

To avoid giving the erroneous impression that an FUE procedure is non-surgical, the term FUE will now be short-hand for Follicular Unit Excision. This better describes the two main components of an FUE procedure, incision (the separation of the follicular unit from the surrounding tissue) and extraction (the removal of the follicular unit from the scalp once it is separated).

OLD Terminology

FUE = Follicular Unit Extraction = the entire harvesting procedure

NEW Terminology

FUE = Follicular Unit Excision = incision (cutting) + extraction (removal)

It is important to note that this is just a change in terminology, not in the technique itself. The FUE procedure has not changed. The FUT/strip procedure and its nomenclature have also not changed. ((Bernstein RM, Rassman WR, Seager D, Shapiro R, et al. Standardizing the classification and description of follicular unit transplantation and mini-micrografting techniques. Dermatol Surg 1998; 24: 957-63.)) It is also important to understand that both FUE and FUT/strip refer to harvesting techniques and not to implantation of grafts into the recipient areas of the scalp (a process that is basically similar in both procedures).

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Q: I have read a lot on the forums about hair transplant reversal and hair transplant repairs. Are they the same thing, if not, what is the difference? Can you reverse a hair transplant? — K.J. ~ Park Slope, N.Y.

A: A “hair transplant repair” refers to techniques that improve the appearance of a poorly executed procedure or one performed with outdated methods. A “hair transplant reversal” refers to techniques that enable the individual to appear as if no hair restoration surgery had been performed. Although the techniques in attempting to perform a repair or a reversal may be similar, the ultimate goals of each are quite different. It is important to understand that although significant improvement can often be achieved, perfect repairs and/or full reversals are generally not possible.

The main reasons for seeking a repair include; large grafts transplanted to the frontal hairline giving an unnatural, “pluggy” appearance, a frontal hairline placed too far forward, hair placed in the wrong direction, and donor and recipient site scarring. Outdated procedures such as scalp reductions and flaps also need to be repaired.

If the transplanted grafts are large (“hair plugs”), it is possible to surgically excise these grafts, microscopically dissect them into smaller follicular unit grafts, and re-transplant them into the scalp in a more natural-looking, aesthetic way. After these large grafts are removed, the sites are sutured closed and heal with very fine, often imperceptible, white scars. Hair plug removal is often followed by one or more sessions of FUT or FUE in order to harvest additional hair for use in camouflaging any remaining plugs or improving the appearance of the region where the plugs had previously been. These combined repairs can lead to excellent outcomes.

If the grafts at the hairline are not large but are placed too low or too broadly, it is possible to use laser hair removal and/or tweezing to remove these hairs. Repeated treatments may be necessary until the hair ceases to grow back at these locations. Additionally, hair which was placed in a direction different from the way hair naturally grows will usually need to be removed.

Another challenge in hair transplant repair is fixing widened donor scars that had resulted from poorly performed FUT/strip procedures. These scars are permanent and may be visible if the hair is not worn long enough. Scars from FUT procedures can be repaired by harvesting hair from the surrounding donor area (using FUE) and transplanting these follicular unit grafts into the scarred tissue.

Scalp micro-pigmentation (SMP), a permanent micro-tattoo, may be useful to further camouflage these linear scars. SMP can also be used to improve the look of the stippled scars of FUE in patients. This can occur with overharvesting, when patients wear their hair too short, or when the balding is more extensive than anticipated and extends into the harvested area.

A hair transplant reversal, in theory, has the goal of having the person look as though a hair transplant had never been performed. While reversing a hair transplant completely is not possible, the techniques previously discussed can be utilized to achieve a number of important things. The donor site scarring can be minimized and/or camouflaged and the smaller follicular unit grafts in the recipient zone can often be removed without leaving behind any visible scarring of the underlying skin. What is not possible is to restore the person’s density to a pre-procedure level as improperly performed transplants always result in wasted hair.

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Q: After an old hair transplant using plugs, can you use lasers or electrolysis to remove the transplanted hair? — N.C. ~ Newark, N.J.

A: You can remove the hair in plugs with electrolysis, but it is difficult since the scarring distorts the architecture of the hair shaft and makes it hard to insert the electrolysis needle. Laser hair removal is a far more efficient way of removing the hair but takes multiple treatments. However, the problem with either of these techniques is that the hair is destroyed and the underlying scarred scalp is not improved. In fact, it is made more visible when the hair has been removed.

Our preferred method of repair is to completely remove the plugs, dissect out the individual follicular units from those plugs and then re-implant them in the proper location and direction. In this way, the hair can be reused and the appearance of underlying scarred scalp can be improved, as well as camouflaged with new hair.

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Q: I was wondering if it was possible to use Follicular Unit Extraction (FUE) on the old plugs instead of graft excision. — N.B. ~ Westport, C.T.

A: Graft excision generally works better than FUE in removing old plugs and mini-grafts. The reason is that, in these grafts, the hair is not aligned due to the scar tissue that tugs on, and bends the hair. Because the hair direction is altered from the scar tissue, there is much more damage when the grafts are removed with the tiny FUE punches. In addition, FUE only removes a very small part of the plug. If the hair in the plug is pointing in the wrong direction or the plug is in the wrong location, the entire graft needs to be removed.

Another benefit of graft excision is that we can remove the underlying scar tissue and improve the appearance of the underlying skin. In FUE, only a tiny bit of the scar tissue is removed and, since FUE holes are left open, FUE actually causes its own scarring. With graft excision, the sites are sutured closed so some scar tissue is removed and the quality of the underlying skin looks more natural.

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Q: I had a hair transplant in 2004 of mostly plugs. The plugs are in an angle which doesn’t really look natural, far from it. I have lost a lot more hair since I did the hair restoration procedure. I regret ever doing a hair transplant. I prefer to reverse the surgery. I have read a lot about repair work on the net, and I have come to the conclusion that using FUE to take the plugs out, and put them back into the scar might be an option, but it may just make it worse on top. Also I can do electrolysis to remove the plugs, might be better because the possibility of scarring is smaller, and as I already have a lot.

A: If you had plugs, then a graft excision with suturing will generally give a better result than FUE, since a graft excision removes the underling scar tissue as well as the plug. FUE only removes the follicles, but leaves the underlying scar tissue. In addition, the shape of the follicles in scar tissue is often distorted, making extraction difficult and leading to more transaction (damage to follicles).

Electrolysis is very difficult in a scarred scalp and also would not remove scar tissue. Laser hair removal with a diode or Alexandrite laser is generally a better option than electrolysis (it is also faster and less expensive), but like electrolysis and FUE, they do nothing to improve the appearance of underlying scar issue.

For more information on this topic, see our pages on Graft Excision in Hair Transplant Repair and Follicular Unit Extraction (FUE).

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Q: Can dermabrasion help eliminate the circular edges of raised plug grafts caused by old hair transplants? Is this similar to the suturing and excision look?

A: Although dermabrasion can flatten elevated edges, it will not eliminate the round, white, circular scars that result 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 eliminates the tell-tale circular marks of the older hair restoration procedures.

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Q: I had several prior hair transplants that left me with a pluggy look, I was hoping to re-utilize the removed hair and re-implant it, perhaps in the front as a new, more recessed hairline. It is possible?

A: The hair from the excised grafts is always re-implanted.

The grafts that are removed are dissected into individual follicular units and then placed back in the recipient area in a more natural distribution and angle. See Patient LKE’s before and after photos in the Hair Transplant Repair Photo Gallery.

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Q: I had an old hair transplant and I’m hoping to remove these plugs and of course am concerned how much additional scarring would result. I’m wondering if removal of the total hair plugs (which are perhaps 2 or 3 mm in diameter) by coring them out would result in a lot of additional scarring.

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.

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