Does Microneedling Help with All Types of Alopecia, or Only Androgenic Alopecia?

Microneedling has become one of the most discussed procedures for hair regrowth in recent years. Originally developed for skin rejuvenation, this minimally invasive technique involves puncturing the scalp with fine needles to create controlled micro-injuries. These micro-injuries stimulate healing responses that include increased collagen production, enhanced blood flow, and the release of growth factors—all of which may support hair follicle activity. But a critical question remains: does microneedling work for all types of alopecia, or only for androgenic alopecia (pattern hair loss)?

Why Microneedling Caught Attention for Hair Loss

Microneedling gained attention after laboratory and animal studies suggested it could increase the absorption of topical treatments like minoxidil and stimulate hair-growth signals around follicles (for example, a 2016 study in mice), and after small human trials reported benefit when it was added to minoxidil. The micro-injuries activate platelets and growth factors such as platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), and epidermal growth factor (EGF), all of which play roles in hair cycle regulation.

These mechanisms make sense in theory—but their effectiveness depends on the type of alopecia being treated. Hair loss is not a single disease but a group of conditions with very different causes, from hormone sensitivity to autoimmune attack. Therefore, the same treatment may not work across the board.

Microneedling and Androgenic Alopecia: The Strongest Evidence

Most of the evidence for microneedling, all of it low in quality, is in androgenic alopecia (AGA), also known as male or female pattern baldness. AGA occurs when hair follicles gradually shrink due to sensitivity to dihydrotestosterone (DHT), a derivative of testosterone.

In a 2013 randomized trial of 100 men with AGA, weekly microneedling plus 5% minoxidil gave a larger 12-week increase in hair count than minoxidil alone (Dhurat et al. 2013). In contrast, a small randomized study of microneedling alone (four monthly sessions, 30 men) found no benefit in hair density (Kakizaki et al. 2023). A 2022 systematic review of 22 studies found generally favorable results for microneedling as an add-on, but rated the data as relatively low quality (English et al. 2022).

These studies suggest microneedling may help as an add-on to other treatments in androgenic alopecia; they do not show a reliable benefit on its own.

Microneedling in Alopecia Areata: A More Complex Story

Alopecia areata (AA) is an autoimmune condition in which the immune system attacks the hair follicles, causing patchy or diffuse hair loss. Unlike AGA, it is not driven by hormones but by immune dysregulation. Theoretically, microneedling could modulate immune responses by triggering wound-healing cytokines, but this idea remains under investigation. The 2022 systematic review found only four small studies in alopecia areata (201 people in total), with varied designs and low-quality data (English et al. 2022). Alopecia areata is an autoimmune condition, and people with autoimmune conditions are often advised against microneedling, so discuss it with a dermatologist first.

What About Scarring Alopecias?

Scarring alopecias (such as lichen planopilaris or frontal fibrosing alopecia) involve permanent destruction of hair follicles due to chronic inflammation and fibrosis. Once the follicle is replaced by scar tissue, regrowth becomes biologically impossible.

In scarring alopecia, there is no evidence that microneedling helps, and needling an inflamed scalp may make things worse. It cannot restore hair once follicles are destroyed. Discuss any procedure with a dermatologist first.

Microneedling Alone vs. Combination Treatments

Most positive studies combined microneedling with topical agents such as minoxidil or platelet-rich plasma (PRP). One proposed reason is increased permeability of the scalp: the microchannels may let more of a substance into the skin. That also means more of a drug such as minoxidil may reach the bloodstream, which has not been well studied. The FDA has not cleared any microneedling device for hair loss, or for use together with another product such as minoxidil or PRP (FDA consumer update, October 2025), and it lists infection among the risks.

Standalone microneedling has not shown a reliable benefit; the one randomized study of it alone in androgenic alopecia found no gain in hair density (Kakizaki et al. 2023). The frequency, needle depth, and post-procedure care may also affect outcomes, but no trial has established the best settings.

Final Verdict: Not All Alopecias Respond Equally

Small trials suggest microneedling may add to minoxidil in androgenic alopecia, where hair follicles remain alive but are miniaturized; evidence quality is low and microneedling alone has not shown a reliable benefit (English et al. 2022; Kakizaki et al. 2023). Evidence in alopecia areata is limited to a few small studies. In scarring alopecias, there is no evidence of benefit, and needling an inflamed scalp may be harmful.

Therefore, microneedling is not a universal solution for all types of alopecia. Most reported benefits come from pattern hair loss, and mostly when microneedling was paired with other treatments. Discuss it with a dermatologist before trying it.

References

• Dhurat, R., Sukesh, M., Avhad, G., Dandale, A., Pal, A., & Pund, P. (2013). A randomized evaluator-blinded study of effect of microneedling in androgenetic alopecia: A pilot study. International Journal of Trichology, 5(1), 6–11. https://pubmed.ncbi.nlm.nih.gov/23960389/

• English, R. S. Jr, Ruiz, S., & DoAmaral, P. (2022). Microneedling and Its Use in Hair Loss Disorders: A Systematic Review. Dermatology and Therapy, 12(1), 41–60. https://pubmed.ncbi.nlm.nih.gov/34854067/

• Kakizaki, P., et al. (2023). Efficacy and Safety of Scalp Microneedling in Male Pattern Hair Loss. Skin Appendage Disorders, 9(1), 18–26. https://pubmed.ncbi.nlm.nih.gov/36636456/

• U.S. Food and Drug Administration. (content current as of October 2025). Microneedling Devices: Getting to the Point on Benefits, Risks and Safety. https://www.fda.gov/consumers/consumer-updates/microneedling-devices-getting-point-benefits-risks-and-safety