Hair follicles that have shrunk due to hair loss often cannot be restored simply through nutritional supplementation. Recently, a treatment that reactivates miniaturized hair follicles using Hair Follicle Stem Cells was published in an international journal, showing new treatment possibilities.
Source: Garg AK, Garg S.
“Enzymatic Dissociation and Identification of Hair Follicle Stem Cells for Reversing Miniaturization in Androgenetic Alopecia.”
Hair Transplant Forum International. 2025;35(3):88–93.
What is hair follicle stem cell therapy?
Hair follicle stem cell therapy is a regenerative treatment that separates stem cells present within healthy hair follicles and injects them into areas where hair loss has progressed.
While conventional drug treatments aim to slow the progression of hair loss,
hair follicle stem cell therapy
✔ aims to enhance the regenerative capacity of the hair follicle itself, and
✔ aims to improve thinning hair (miniaturization).
These possibilities were also introduced in a study published in Hair Transplant Forum International (2025).
Why are hair follicle stem cells important?
In androgenetic alopecia, hair follicles gradually shrink over time, and thick hairs transform into thin, downy hairs.
This is called follicular miniaturization.
The problem is that once a hair follicle has shrunk, it is difficult to recover through nutritional supplementation alone.
For this reason, research on using stem cells within hair follicles to induce regeneration of miniaturized follicles has been actively conducted recently.
What treatment was carried out in the international paper?
The paper used healthy hair follicles obtained during the hair transplant process.
After separating hair follicle stem cells (HFDSC) from these using an enzyme (trypsin),
they were injected directly into areas where hair loss had progressed.
The study subjects were
- 20 people in the treatment group
- 20 people in the control group
.
The separated cells were
CD200
CD34
and analyzed by checking stem cell markers such as CD44
to confirm whether stem cells were actually present before use.
Study results
The results after 6 months were quite meaningful.
Increase in hair density
Approximately 19% increase
Increase in hair thickness
Approximately 20% increase
Cell survival rate
Approximately 96%
Photographic evaluation
Significant improvement was confirmed in all treatment groups.
Conversely, in the control group, hair loss progressed further over time.
How are stem cells separated?
In this study, trypsin was used.
However, in recent stem cell research,
methods using collagenase are also widely utilized.
Each enzyme has its advantages and disadvantages.
| Item | Trypsin | Collagenase |
|---|---|---|
| Reaction speed | Fast | Slow |
| Cell damage | Somewhat present | Low |
| Stem cell maintenance | Moderate | Excellent |
| Tissue separation | Simple | Precise |
Because collagenase can separate hair follicle tissue more gently,
it is known to have advantages in terms of stem cell survival rate and maintenance of function.
| Enzyme | Advantages | Disadvantages | Recommended use |
| Trypsin | Fast and inexpensive, simple cell separation | Cell surface damage | Harvesting cultured cells, monolayer cells |
| Collagenase | Excellent breakdown of extracellular matrix, high cell survival rate | Expensive, long processing time | Follicular dermis, stem cell separation |
What makes Modi Hair Plant Clinic's hair follicle stem cell therapy different?
At Modi Hair Plant Clinic, based on our hair transplant experience, we focus on the regenerative capacity that hair follicles possess.
In particular, by applying hair transplant and hair follicle stem cell therapy together, we perform treatment that simultaneously considers the graft survival environment of transplanted hair and the maintenance environment of existing hair.
After thoroughly evaluating the patient's hair loss condition and scalp condition,
we establish an individualized treatment plan.
※ The treatment method may vary depending on the patient's condition.
This may be helpful for the following people.
- Early-stage androgenetic alopecia
- Cases where hair is gradually thinning
- Cases where you want to improve the graft survival environment after a hair transplant
- Cases where you are not satisfied with drug treatment alone
- Cases where you want to maintain existing hair as much as possible
Frequently Asked Questions (FAQ)
Q. Is hair follicle stem cell therapy possible without a hair transplant?
It depends on the patient's hair loss condition and treatment purpose. In some cases, standalone treatment may be possible, and in some cases, better results may be expected when combined with a hair transplant.
Q. When do the effects begin to appear?
There are individual differences, but generally changes in hair thickness and density may appear over several months.
Q. Have the effects been proven by the study results alone?
This paper showed very encouraging results, but the researchers also explain that larger-scale, multicenter studies are needed. Therefore, at present, it is important to apply it together with existing treatments according to the patient's condition.
Conclusion
Hair follicle stem cell therapy goes beyond simply slowing hair loss; it is a new approach that studies the regeneration possibilities of miniaturized hair follicles.
The international paper published in 2025 reported meaningful results in improving hair density and thickness, and it is expected that more evidence will accumulate through further research going forward.
Because hair loss varies in both its degree of progression and its cause, it is important to choose a treatment method that suits you based on an accurate diagnosis. At Modi Hair Plant Clinic, we thoroughly analyze each individual's condition and propose a customized treatment plan that includes hair transplant and hair follicle stem cell therapy.
This content was written based on research published in an international journal and posted after review by medical staff. The research results introduced do not guarantee any specific treatment effect, and the treatment method may vary depending on the patient's condition.