Does microneedling actually help hair loss?
Added to topical minoxidil, yes. This is not a meta-analysis. It is a single 12-week randomized, evaluator blinded pilot study in 100 men with androgenetic alopecia, run at a dermatology department in Mumbai between October 2011 and June 2012. Fifty men had weekly microneedling plus twice daily 5% minoxidil lotion, and fifty used the same minoxidil lotion alone.
The hair count difference between the two groups was large, and so was the difference in how patients rated themselves.
What the trial found at 12 weeks:
- Hair count: mean change of 91.4 in the microneedling plus minoxidil group versus 22.2 with minoxidil alone, counted in a tattoo marked 1 cm2 area on the vertex
- Investigator rating: 40 patients in the microneedling group scored +2 to +3 on a 7 point scale, compared with none in the minoxidil group
- Patient rating: 41 of 50 (82%) in the microneedling group reported more than 50% improvement, versus 2 (4.5%) on minoxidil alone
- Evidence base: 100 men, aged 20 to 35, with grade III vertex or IV androgenetic alopecia, randomized by coin toss
Dr. Kumar’s Take
The size of the gap is what makes this study interesting, and also what makes me cautious about it. A mean hair count change of 91.4 against 22.2 in twelve weeks is not a subtle signal. Effects that large in small pilot studies often shrink when the work is repeated in bigger, tightly controlled trials, so I read this as a promising result rather than a settled one.
Hair count is a real outcome, but it is a specific one. It reflects how many follicles are producing a visible hair in a marked square centimeter, which includes follicles that had gone dormant coming back into growth. That is worth having. It is not the same thing as reversing the miniaturization that drives androgenetic alopecia over decades.
The mechanism the authors propose is that controlled micro-injury activates the wound healing and growth factor signaling that pushes follicles from telogen into anagen, working on the same Wnt and related pathways that androgens suppress. That is plausible, and it fits the design: every man in the microneedling group was also using minoxidil. This trial tested microneedling as an add-on, not on its own, and I would not stretch it further than that.
I would also be careful with the equipment. This study used a 1.5 mm dermaroller on a scalp prepared with betadine and saline, rolled only until mild erythema appeared, with minoxidil held for 24 hours afterward. Home devices vary in needle length and sterility, and the failure modes are infection and scarring, neither of which helps hair. If you try this, the depth, the hygiene, and the endpoint are the procedure, not details around it.
Study Limitations
One hundred men at a single center over twelve weeks is a pilot, and the authors call it that. Enrollment was limited to men aged 20 to 35 with grade III vertex or IV disease, so the result does not automatically extend to women, older men, or more advanced loss. Randomization was by coin toss. Investigators grading the photographs were blinded, but patients undergoing a weekly scalp procedure cannot be, which matters for the self reported outcome where 82% claimed more than 50% improvement. And because the microneedling group also used minoxidil throughout, this tells you nothing about microneedling used alone.
Related Studies and Research
- Comparing Minoxidil, Finasteride, and Dutasteride for Hair Loss
- Saw Palmetto for Hair Loss: Does It Lower DHT and Regrow Hair?
- Red Light Therapy for Hair Loss: What the Evidence Shows
- Androgenetic Alopecia Treatments Review
FAQs
Does microneedling work on its own?
This trial does not answer that. Every man in the microneedling group applied 5% minoxidil twice daily as well, so the comparison was combined treatment against minoxidil alone.
How much did hair count improve?
The mean change in hair count at 12 weeks was 91.4 in the microneedling plus minoxidil group and 22.2 in the minoxidil only group, measured in a fixed 1 cm2 area on the vertex marked with tattoos so the same patch was counted each time.
What did the microneedling sessions involve?
Weekly sessions with a 1.5 mm dermaroller. The scalp was prepared with betadine and normal saline, then rolled in longitudinal, vertical, and diagonal directions until mild erythema appeared, which was the endpoint. Patients skipped minoxidil on the day of the procedure and resumed 24 hours later.
Did it help men who had already failed minoxidil?
The authors report that patients unsatisfied with conventional therapy for androgenetic alopecia responded well to microneedling, and they describe it as useful for hair loss refractory to minoxidil.
Bottom Line
In 100 men with mild to moderate androgenetic alopecia, adding weekly 1.5 mm microneedling to twice daily 5% minoxidil beat minoxidil alone on all three primary measures at 12 weeks: hair count, investigator assessment, and patient assessment. This is a single pilot study rather than pooled evidence, it ran for three months, and it tested microneedling as an add-on to minoxidil, not as a treatment by itself.
Read the study
A randomized evaluator blinded study of effect of microneedling in androgenetic alopecia: a pilot study. International Journal of Trichology. 2013;5(1):6-11. PMID 23960389.
