Microneedling for Hair Loss: Does the Scalp Treatment Actually Work?
Microneedling, a cosmetic procedure long celebrated for its skin-rejuvenating properties, is gaining traction as a potential treatment for hair loss. While traditionally used to smooth fine lines and fade acne scars, dermatologists are increasingly exploring its efficacy in stimulating hair growth, though caution and expert guidance remain paramount.
Microneedling works by using very fine needles to create controlled micro-injuries in the skin. “These tiny punctures trigger the release of growth factors, stimulate collagen production, and increase blood flow,” explains Dr. Song Park, a board-certified dermatologist with UW Medicine in Seattle. When applied to the scalp, the goal is to “stimulate hair follicles and improve the absorption of topical treatments like minoxidil, potentially supporting regrowth,” she adds.
Understanding the Procedure and Available Tools
Dermatologists employ several instruments for microneedling, including dermarollers, stampers, and automatic pen-like devices, according to Dr. Natalie Kasha, a board-certified dermatologist, fellowship-trained hair restoration surgeon, and co-founder of the Root Hair Institute. The U.S. Food & Drug Administration has approved specific medical devices for microneedling, but these are exclusively for in-office treatments. Utilizing these devices for hair growth is currently considered an “off-label” application.
“When performed by a physician or licensed provider, in-office microneedling is generally considered safe and well-tolerated,” Dr. Park assures.
Is Microneedling Effective for Hair Regrowth?
Emerging evidence suggests potential benefits for individuals experiencing androgenetic alopecia (commonly known as female or male pattern hair loss) and those with autoimmune conditions like alopecia areata. A 2021 review published in Dermatology and Therapy highlighted these possibilities. However, Dr. Kash emphasizes, “there is still a need for higher quality studies to further study the safety and efficacy of microneedling for hair loss.”
Interestingly, some research indicates that combining minoxidil with microneedling yields better results than using minoxidil alone, notes Dr. Heather W. Goff, a professor in the Department of Dermatology at UT Southwestern Medical Center. Despite these promising findings, significant unknowns remain. Doctors are still determining the optimal session frequency (weekly, biweekly, or monthly), the ideal needle depth, and the clinical endpoint for maximizing results.
The success of microneedling for hair growth is heavily reliant on the provider’s technique. Improper execution can lead to inflammation and scarring, potentially inhibiting hair growth, warns Dr. Goff. Individuals with existing scarring hair loss, eczema, psoriasis, or other inflammatory skin conditions are generally not suitable candidates, as the procedure could exacerbate their symptoms, according to Dr. Park.
Dermatologists do not view microneedling as a standalone cure for hair loss. “It’s not a cure on its own, but a helpful adjunct therapy,” Dr. Park clarifies. Several FDA-approved therapies, including prescription minoxidil and finasteride, remain primary treatment options.
The Rise of At-Home Dermarolling: Safety Concerns
The popularity of at-home dermarolling has surged, fueled by endorsements from wellness influencers on platforms like TikTok. These devices are readily available online, with some priced as low as $10. However, experts urge caution.
“The American Academy of Dermatology recognizes microneedling as an in-office procedure that may have benefits, but it doesn’t specifically endorse at-home dermarolling,” Dr. Park states. While at-home dermarollers can be used cautiously with proper hygiene, their benefits are considerably less pronounced compared to professional treatments. Most studies investigating microneedling’s potential for hair growth have been conducted in medical settings.
The most significant concern surrounding at-home microneedling, whether on the face or scalp, is the risk of damaging the skin barrier and causing infection. “If you’re not sterilizing the device in between uses, and if it’s piercing or poking the skin in a substantial way, there’s a risk of getting an infection,” warns Dr. Goff. In a clinical setting, dermatologists meticulously prepare the scalp and utilize medical-grade sanitizers to ensure a sterile environment.
Before attempting self-treatment, experts unanimously recommend consulting a dermatologist for a proper diagnosis and personalized treatment plan. Once a diagnosis is established, a dermatologist can assess whether microneedling is a suitable option.
