What does the research say about microneedling for hair growth?
Microneedling (hair mesotherapy) is a clinically proven treatment that delivers active ingredients directly into the scalp to stimulate hair follicles and promote regrowth. Peer-reviewed research shows it significantly outperforms topical treatment alone: in a randomized trial, 82% of patients achieved over 50% improvement versus 4.5% with topical treatment only (Dhurat et al., 2013).
At Hairgenetix, every claim we make is backed by credible research and held to the highest quality standards. Our products combine copper peptides (GHK-Cu & AHK-Cu), microneedling delivery, and PDRN — three independently researched mechanisms that work together for maximum efficacy.
Below you'll find the key clinical findings from 15+ peer-reviewed studies, followed by links to the full research papers on PubMed. All content is reviewed by Dr. Esther Bodde, Cosmetic & Medical Physician.
Related research: Copper Peptide Research · PDRN Research · Hair Loss Causes · Ingredients
How much more effective is microneedling vs topical treatment?
Microneedling significantly outperforms topical treatments alone. Based on multiple peer-reviewed studies and clinical trials, microneedling and hair mesotherapy deliver measurably better results than topical treatment by itself.
Evidence-backed benefits include:
- 91.4 new hairs per cm² versus 22.2 with topical alone (Dhurat 2013)
- Increased hair shaft thickness
- Reduced shedding (hair-pull tests)
- Faster onset of new growth (week 6 vs week 10)
- Results sustained 8 months after treatment ended (Dhurat 2013)
See below for quantified conclusions and full clinical studies.
How many new hairs does microneedling produce?
Microneedling increases hair count up to four times more than topical treatments alone — with average gains of approximately 91.4 new hairs versus 22.2 new hairs after 12 weeks of treatment (Dhurat et al., 2013, PubMed).
What percentage of patients see significant improvement?
Over 82% of patients experienced more than 50% visible improvement in hair regrowth with microneedling, compared to just 4.5% of those using topical solutions (Dhurat et al., 2013, PubMed).
Do patients see real improvement with hair mesotherapy?
In a randomized trial reviewed by Aledani et al. (2024), 69% of mesotherapy patients reported improved hair loss, compared with 38% in the control group, with minimal side effects (Aledani et al., 2024, PubMed).
Is combining mesotherapy with topical serum more effective?
Yes. Combination therapies yield statistically significant improvements in hair density and count, surpassing monotherapy in both efficacy and durability (Pei et al., 2024). In the landmark 2013 trial, microneedling patients still reported sustained results 8 months after treatment ended (Dhurat et al., 2013, PubMed).
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Microneedling vs Topical Treatment: Research Summary
| Metric | Microneedling + Serum | Topical Only | Source |
|---|---|---|---|
| New hair count (12 weeks) | 91.4 | 22.2 | Dhurat 2013 |
| Patients with >50% improvement | 82% | 4.5% | Dhurat 2013 |
| Self-reported improvement | 69.2% | 37.5% | Aledani 2024 |
| Photographic improvement | 62.8% | 17.5% | Moftah 2013 (vs placebo) |
| Onset of new growth | Week 6 | Week 10 | Dhurat 2013 |
| Sustained response at 8 months | ✓ | — | Dhurat 2013 |
Data compiled from peer-reviewed clinical studies. See full study list below for details.
Written by Malcolm Smith, Founder of Hairgenetix. Medically reviewed by Dr. Esther Bodde, Cosmetic & Plastic Surgeon (MD). Last updated: March 2026. References: Pickart et al. 2015 (GHK-Cu) · Aledani et al. 2024 · Copper Peptides & Hair 2019.
SCIENTIFIC STUDIES & MAIN CONCLUSIONS
1. Dhurat et al., 2013 – Microneedling vs. Topical Treatment
Main Conclusion:Microneedling significantly outperformed topical solutions in hair growth stimulation for androgenetic alopecia (AGA).
Quantified Benefits:
- Mean hair count increase at 12 weeks: Microneedling group: 91.4 hairs; Topical group: 22.2 hairs.
- 82% of patients reported >50% improvement with microneedling vs. only 4.5% with topical only.
- New hair growth started by week 6 in microneedling group; topical group by week 10.
2. Gupta et al., 2022 – Meta-analysis on Microneedling for Hair Loss
Main Conclusion: Microneedling monotherapy increased total hair count more than topical solutions; combination therapy further improved results.
Quantified Benefits:
- Microneedling monotherapy: Hair count increased significantly more than topical solutions only (β = 12.29; p < 0.001).
- Combination microneedling combined with topical solution: Additional increase in hair count (β = 7.63; p < 0.05).
- Duration and regulated frequency can improve microneedling outcomes.
3. Abdi et al., 2023 – Minoxidil Plus Microneedling Meta-Analysis
Main Conclusion:
Across 10 randomized trials (466 patients), adding microneedling to minoxidil produced a large, statistically significant increase in total hair count versus minoxidil alone.
Quantified Benefits:
- Standardized mean difference in hair count: 1.76 (95% CI 0.87 to 2.66) favouring combination therapy.
4. Pei et al., 2024 – Combined Microneedling Therapy
Main Conclusion:
Combined microneedling therapy showed statistically significant improvement in both hair density and diameter over monotherapy.
5. Tang et al., 2022 – Mesotherapy for Pattern Hair Loss (Systematic Review)
Main Conclusion:
Mesotherapy is effective for pattern hair loss (PHL) with positive efficacy in all reviewed studies and no significant side effects, though larger studies are needed.
Quantified Benefits:
Positive results in 12 studies (RCTs, observational); noted improvement in hair regrowth, no significant adverse effects.
6. Aledani et al., 2024 – Mesotherapy Systematic Review (11 Studies)
Main Conclusion:
Systematic review of 11 studies: mesotherapy shows efficacy for pattern hair loss with fewer systemic side effects than oral or topical routes.
Quantified Benefits:
In one included randomized trial, 69.2% of mesotherapy patients self-reported improved hair loss versus 37.5% in the control group (P=.028); the density change was not statistically significant in all measures.
7. Moftah et al., 2013 — Dutasteride Mesotherapy vs Placebo Injections (126 women; 12 sessions; 18-week eval).
Results:
- 62.8% photographic improvement with dutasteride mesotherapy vs 17.5% with saline placebo injections.
- Mesotherapy showed significantly less hair pull and significantly increased hair diameter.
- Minimal side effects.
Full study list (with links)
- Dhurat 2013 (RCT, n=100): Microneedling plus 5% minoxidil vs minoxidil alone. The landmark trial. Read the full report
- Kumar 2018 (RCT, n=68): Weekly microneedling added to 5% minoxidil, blinded observer. Read the full report
- Bao 2020 (RCT, n=60): Electrodynamic microneedling vs minoxidil vs combination, three arms. Read the full report
- Faghihi 2021 (RCT): Microneedling depth compared, 0.6 mm vs 1.2 mm. Read the full report
- Liang 2022 (RCT, n=120 women): Minoxidil plus microneedling vs minoxidil plus oral spironolactone. Read the full report
- Zhang 2022 (RCT, n=40 women): Weekly microneedling added to 2% minoxidil. Read the full report
- Kakizaki 2023 (RCT, n=30): Scalp microneedling alone, no topical treatment. Read the full report
- Gupta 2022 (review): Regression analysis of microneedling for hair loss. Read the full report
- Abdi 2023 (meta-analysis, 10 RCTs): Minoxidil plus microneedling, 466 patients. Read the full report
- Pei 2024 (meta-analysis, 13 RCTs): Combined microneedling therapy, 696 patients. Read the full report
- Ahmed 2025 (meta-analysis, 12 RCTs): Microneedling plus minoxidil, 631 patients. The newest pooled evidence. Read the full report
- Moftah 2013 (controlled, n=126 women): Dutasteride mesotherapy vs placebo injections. Read the full report
- Tang 2022 (systematic review, 12 studies): Mesotherapy for pattern hair loss in 527 men and women. Read the full report
- Gupta 2023 (systematic review, 27 studies): Every injected mesotherapy agent class, reviewed. Read the full report
- Aledani 2024 (systematic review, 11 studies): Mesotherapy vs topical minoxidil. Read the full report
- Saceda-Corralo 2022 (real-world, n=541): Dutasteride mesotherapy safety and effectiveness at scale. Read the full report
Research Library: Every Study, In Depth
All of the research below is synthesised into one practical resource: Microneedling for Hair Growth: the complete guide.
Microneedling Studies
- Landmark Microneedling Study (2013)
- Minoxidil + Microneedling RCT (2018)
- Electrodynamic Microneedling Trial (2020)
- Microneedling Depth Comparison (2021)
- Microneedling vs Spironolactone in Women (2022)
- Microneedling + 2% Minoxidil in Women (2022)
- Microneedling-Alone Clinical Trial (2023)
- Microneedling Efficacy Review (2022)
- Minoxidil + Microneedling Meta-Analysis (2023)
- Microneedling + Topical Meta-Analysis (2024)
- Combined Therapy Meta-Analysis (2024)
- Microneedling + Minoxidil Meta-Analysis (2025)
- Copper Peptide Microneedling Study (2025)