Achieving Thicker Hair: The Power of Adjuvant Therapies
For many years, the conventional wisdom when it came to hair loss (specifically, male and female pattern baldness, aka androgenetic alopecia) was one of resigned deterioration. The only surefire way to “fix” the problem, it seemed, was to cut it out of the back of the head and plug it into the thinning area of the scalp. Transplant surgery has come a long way in the past few decades to become an exacting and nuanced art and science, with results that are often indistinguishable from the patient’s natural growth. But perhaps the single most significant development in modern hair restoration has been a shift in focus away from solely moving hair from the “permanent” donor zone at the back of the head and grafting it into the problem areas of the scalp. The key to a long-lasting and successful hair restoration plan is the strategic and diligent application of non-surgical adjuvants both before and after surgery. Today, the use of medications like Finasteride and Minoxidil, biologic therapies like PRP (Platelet-Rich Plasma), and light-based treatments like LLLT (Low-Level Laser Therapy) to protect existing hair and optimize transplant results is standard of care. This suite of therapies does not simply “supplement” a hair restoration procedure but is absolutely essential to the protection of the patient’s existing hair, the optimization of surgical results, and the long-term preservation of the investment.
In order to appreciate the necessity for these adjuvants, one must first understand that androgenetic alopecia is a progressive condition. It is not a one-time event but rather an ongoing process. Hair follicles in the genetically vulnerable areas of the scalp slowly and inexorably miniaturize over the course of many years as they are chronically damaged by dihydrotestosterone (DHT), an active metabolite of the male hormone testosterone. A hair transplant surgeon then takes healthy, DHT-resistant donor hair and plants them by the thousands in the genetically thinning areas, moving the hair one hair at a time. But despite this massive influx of new and healthy hairs, thousands of the original, DHT-susceptible hairs surrounding the implanted grafts are still in place and are still at risk. These existing, weak hairs, left unchecked, will slowly but surely continue to shrink and fall out over time. The result is often a post-surgical, “patchy” appearance of islands of perfectly healthy transplanted hairs surrounded by a barren or continuingly receding landscape—precisely the opposite of what the patient is hoping to achieve. The term “shock loss” of pre-existing weak hairs in the post-operative period is not uncommon. In short, it is the explicit goal of adjuvant therapies both before and after surgery to stabilize and protect the patient’s existing hair so that the net result can be a fuller, more complete, and far more natural result.
The best medical therapies for hair loss that we have discovered so far are two prescription medications, Finasteride and Minoxidil. Finasteride is a systemic oral medication that works at the hormonal root of the problem in men. It is a highly specific inhibitor of an enzyme called 5-alpha-reductase Type II, which is responsible for converting testosterone into the follicle-damaging DHT. By binding to this enzyme, Finasteride can reduce serum and scalp DHT levels by as much as 70% and put the genetic hair loss process into remission. Clinical trials in men have repeatedly shown that a majority of men taking the drug see a cessation of hair loss and a significant minority see measurable regrowth, mostly in the crown. In the context of a hair transplant, Finasteride can have a primarily prophylactic effect. By stabilizing the hormone environment, it can help to ensure that the surrounding recipient scalp does not continue to deteriorate around the newly-planted grafts, and it can help to preserve the weak, pre-existing hairs that are critical for blending and density-building between the new transplants. It is important to note that this medication is not risk-free and potential side effects must be discussed at length with a prescribing physician. However, for most men, Finasteride is the most effective long-term tool for hair loss stabilization we have available.
If Finasteride is the proverbial defensive lineman, Minoxidil is the offensive lineman. It is a topical solution or foam that can be purchased over the counter, but its precise mechanism of action is still not fully understood and is thought to be multi-modal. It is thought to act as a vasodilator to increase blood flow to the follicles, bringing more oxygen and nutrients. Most importantly, it seems to open potassium channels in the follicular cells, and is also thought to increase the anagen (growth) phase of the hair cycle, essentially pushing more hairs into the active growing phase. The result is that fine, miniaturized and vellus-like hairs can be coaxed into thicker, more terminal hair shafts, a process also called anagen conversion. Minoxidil, therefore, has a dual effect for a transplant patient. Pre-operatively, it can be used to improve the health and robustness of the scalp and existing hairs, setting the stage for the success of the recipient bed. Post-operatively, it can help kick-start the growth of newly-planted grafts and, more importantly, protect the surrounding native hairs from post-surgical shock loss. Minoxidil is commonly taken in combination with Finasteride, and these two drugs are said to have a synergistic effect on one another, attacking the problem from different angles and working together to create an effective pharmacological foundation for a restoration program.
In addition to these foundational medications, hair loss therapies have seen significant advances in the development of biologic and light-based treatments that work in a regenerative or bio-stimulatory manner to enhance and protect the scalp and its follicles. One such technology is Platelet-Rich Plasma or PRP therapy, which involves drawing a small sample of the patient’s own blood, spinning it in a centrifuge to concentrate the platelets, and then re-injecting that PRP into the scalp. Platelets are cell bodies packed with powerful growth factors like PDGF (Platelet-Derived Growth Factor), VEGF (Vascular Endothelial Growth Factor), and TGF (Transforming Growth Factor), to name a few, all of which are key signaling molecules in the body’s natural wound-healing, angiogenesis, and cellular proliferation processes. When injected into the scalp, PRP is thought to signal these dormant hair follicles to wake up, prolong the anagen (growth) phase, and improve density and hair shaft thickness in the targeted area. PRP for a hair transplant patient can be a game-changer. An increasing number of surgeons will either directly inject PRP into the recipient areas during the procedure or in a series of post-operative treatment sessions. The logic is that this jump-starts and super-charges the healing process, can improve graft survival by increasing blood supply, and spurs faster and more robust growth of transplanted hairs. It also acts as a regenerative tonic to existing hair, fortifying it further and helping to protect against future loss.
Another non-invasive technology that has also become mainstream in the hair restoration toolbox is low-level laser therapy (LLLT). This modality, which can be applied with laser caps, helmets, and even combs, uses specific wavelengths of low-energy photons to penetrate the skin and reach the hair follicles where it is thought to boost cellular activity in a process known as photobiomodulation. The light energy is absorbed by the mitochondria, which kick-starts the production of adenosine triphosphate (ATP), the essential energy currency of cellular metabolism. In turn, the added energy and stimulation has been shown to improve follicular function, decrease inflammation, and switch the hair cycle from resting (telogen) back to growing (anagen). The effects of LLLT are often more subtle than other medical therapies, but consistent usage has been shown in clinical studies to increase hair density and thickness. Its primary value in a multimodal plan is its strong safety profile and ease of use. A patient can simply use an LLLT device at home to support the results of a hair transplant, help the entire scalp stay healthy, and work in synergy with their other therapies without the risk of systemic side effects.
What is most powerful, however, is a multi-modal approach that uses several of these adjuvant therapies in a strategic, personalized way for each patient. A competent hair restoration specialist is less concerned with doing surgery and more interested in creating a long-term management plan for the patient. This can start even before surgery and include using a patient on Finasteride and Minoxidil for 6-12 months before a transplant to stop hair loss and sometimes even improve the baseline density, a practice that can sometimes decrease the overall graft count. The surgery is then performed, sometimes with intra-operative PRP. The post-op protocol then includes mandatory continuation of Finasteride and Minoxidil indefinitely, PRP treatments periodically to give the patient a regenerative boost and maximize growth, and daily LLLT as a supporting measure. This is a layered strategy that combines a wide range of modalities that can have a synergistic effect on hair loss by working on different mechanisms: hormonal, cellular, and bio-stimulatory.
The result of the adoption of this comprehensive model is the maturation of the hair restoration field as a whole. It transforms the patient’s journey from a one-time transactional event to an ongoing, maintenance-focused partnership. It sets proper expectations for the patient by reinforcing the idea that a transplant is a redistribution of a finite hair supply, not an infinite one, and that the future of that supply is dependent on the patient’s own actions. The surgeon is the artist and technician, but the patient is now the steward of their results. The failure to utilize these protective measures can often lead to the heartbreak of seeing new, transplanted hairs flourish while the native hair behind it disappears, creating an unnatural and unsightly contrast. For the surgeon, it means embracing a culture of education and stewardship of their patients’ hair loss by encouraging strict adherence to the regimen of medications, boosting each other, and supporting the results over the long haul.
In summary, the idea of a hair transplant as a one-and-done procedure to solve hair loss is a paradigm of the past. The critical role of non-surgical adjuvants is now an indisputable part of the standard of care in hair restoration. Finasteride, Minoxidil, PRP, and LLLT are not simply optional supplements to a hair transplant procedure but are an essential part of a hair restoration toolbox designed to combat a progressive condition on all fronts. Hormonal, cellular, and bio-stimulatory modalities work together to create a stable, fertile environment for both transplanted and native hair to not only survive but to thrive in the years and decades after surgery. This is the standard of care that respects the complexity of the problem, that upholds the art of hair restoration, and that enables patients to reach the highest version of their hair restoration journey possible.
