Microneedling Plus Minoxidil for Hair Loss: Ahmed 2025
This is a plain-language summary of the original published research. We do not add conclusions or opinions of our own. This is not medical advice — consult a certified healthcare practitioner before making any decision.
Original research published in Archives of Dermatological Research, 2025
Evaluating the efficacy and safety of combined microneedling therapy versus topical Minoxidil in androgenetic alopecia: a systematic review and meta-analysis
Study conclusion
Adding microneedling to minoxidil significantly improved hair count compared to minoxidil alone across 12 controlled trials involving 631 patients. The combined treatment worked better at all microneedling depths tested and with both short and longer treatment durations. However, variation between studies was very high (90%), meaning results varied considerably across trials, and the true size of the benefit is uncertain.
Strength of evidence
Based on a meta-analysis of 12 randomised controlled trials with 631 patients. Score reflects a statistically significant result with consistent direction across all subgroups. Score reduced due to very high heterogeneity (I2 = 90%) and variability in microneedling protocols across trials.
Who it applies to
Who was studied
Men and women with androgenetic alopecia. Male participants had Norwood-Hamilton grades II to V; female participants had Ludwig grades I to III. Ages ranged from approximately 18 to 60 years. Total: 631 patients across 12 trials.
Who was NOT studied
People with other types of hair loss. No trial tested microneedling combined with finasteride or dutasteride. No trial enrolled patients with severe pattern hair loss (Norwood grade VI or VII).
What to look for when shopping
Microneedling devices included electrodynamic microneedles, rolling microneedles, and home-use devices. Needle depths ranged from 0.25 to 2.5mm. Session frequency, treatment duration, and minoxidil concentration varied across trials. All trials compared the combination against topical minoxidil alone.
What research cannot help you decide
The optimal microneedling device, needle depth, or session frequency. Whether microneedling adds benefit on top of oral minoxidil. Whether the combination is superior to finasteride or dutasteride. Long-term outcomes beyond the study periods.
Key findings
- Microneedling plus minoxidil significantly improved hair count compared to minoxidil alone across 12 RCTs.
- The benefit held for both shallow needle depths (up to 1mm) and deeper depths (more than 1mm).
- Longer treatment durations (more than 12 weeks) showed a greater benefit than shorter durations.
- Investigator and patient global assessments also favoured the combination over monotherapy.
- Adverse events were mild and comparable between groups: temporary redness, scalp irritation, and mild discomfort.
- Heterogeneity between studies was very high (I2 = 90%), meaning there was substantial variation in how large the benefit was across different trials.
What they did
The researchers searched six databases up to September 2024 for RCTs comparing microneedling plus topical minoxidil against topical minoxidil alone in patients with androgenetic alopecia. The protocol was registered with PROSPERO. 12 RCTs involving 631 patients met the inclusion criteria. The primary outcome was change in hair count, analysed using standardised mean difference with a random-effects model. Subgroup analyses examined the effect of needle depth and treatment duration.
What they found
| Comparison | Result | Significant? |
|---|---|---|
| Microneedling plus minoxidil vs minoxidil alone: hair count (12 RCTs, 631 patients) | Significantly more hair growth with combination therapy (large effect, but very high variation between studies) | Yes |
| Needle depth up to 1mm: combination vs minoxidil alone | Significantly more hair growth with combination | Yes |
| Needle depth more than 1mm: combination vs minoxidil alone | Significantly more hair growth with combination | Yes |
| Treatment duration more than 12 weeks: combination vs minoxidil alone | Significantly more hair growth with combination (larger effect than shorter duration) | Yes |
| Treatment duration up to 12 weeks: combination vs minoxidil alone | Significantly more hair growth with combination | Yes |
| Adverse events: combination vs minoxidil alone | No significant difference in adverse event rates between groups | No |
Limitations
- 1.Heterogeneity between studies was very high (I2 = 90%), meaning the size of the benefit varied considerably across trials.
- 2.Microneedling protocols varied widely: different devices, needle depths, session frequencies, and treatment durations.
- 3.No trial compared microneedling plus minoxidil against finasteride, dutasteride, or other established treatments.
- 4.Most trials enrolled predominantly male patients with mild to moderate hair loss.
- 5.Long-term efficacy and safety beyond the study periods is unknown.
Who funded it
Not reported. No conflicts of interest declared by the authors.