Hair thinning and hair loss can be frustrating, particularly when you are looking for practical ways to support healthier hair growth. Derma rollers have become increasingly popular as a home-use option for people interested in scalp microneedling.
But does a derma roller actually work for hair growth?
Research suggests that microneedling may help improve hair growth in some people, particularly when used alongside established hair loss treatments. However, the evidence for using a derma roller on its own is more limited, and results can vary depending on the cause of hair loss and how the treatment is performed.
What Is a Derma Roller for Hair?
A derma roller is a handheld device covered with very small needles. When rolled across the scalp, the needles create controlled micro-injuries in the skin. This process is known as microneedling.
A derma roller for hair is designed specifically for use on the scalp. The idea behind microneedling is that the controlled stimulation may trigger the body’s natural healing response and encourage processes associated with tissue repair and hair follicle activity.
Microneedling may also increase the penetration of topical products into the skin. This is one reason it has been studied alongside treatments such as topical minoxidil for pattern hair loss.
How Could a Derma Roller Help With Hair Growth?
There are several theories about how scalp microneedling may support hair growth.
One is that creating controlled micro-injuries can stimulate a wound-healing response involving growth factors and other cellular processes. These processes may help create an environment that supports hair follicle activity.
Another potential benefit is improved absorption of topical treatments. Microneedling can temporarily affect the skin barrier, which may allow certain topical products to penetrate more effectively. Research has therefore focused heavily on microneedling combined with existing hair loss treatments rather than using it as a standalone approach.
Does the Research Support Derma Rolling for Hair Growth?
The research is promising, but it is important to distinguish between microneedling in general and derma rollers specifically.
A systematic review covering 22 clinical studies and 1,127 participants found generally favourable results for microneedling as an additional treatment for androgenetic alopecia and some other hair loss conditions. However, the researchers also noted that the overall quality of the evidence was relatively low and that treatment methods varied considerably between studies.
More recent research has found that combining microneedling with minoxidil can produce greater improvements in hair count than minoxidil alone in people with androgenetic alopecia. A 2025 systematic review and meta-analysis of 12 randomised controlled trials involving 631 patients found improvements in hair count and hair diameter with combined treatment.
However, this does not mean that every derma roller will produce the same results. A 2026 review specifically examining dermaroller-mediated microneedling found only three studies that met its inclusion criteria. The authors concluded that evidence for dermaroller monotherapy remains limited and inconsistent.
Who Might Benefit From Using a Derma Roller?
Microneedling has been studied most extensively in people with androgenetic alopecia, also known as pattern hair loss. It has also been investigated for other types of hair loss, although the amount and quality of evidence varies.
The cause of hair loss is important when considering any treatment. Hair thinning can have many causes, and a derma roller may not address the underlying reason for hair loss.
If hair loss is sudden, severe, occurring in patches or accompanied by scalp changes, it is worth speaking with a healthcare professional to identify the cause before starting a home treatment.
Can a Derma Roller Regrow Lost Hair?
A derma roller should not be viewed as a guaranteed way to regrow lost hair.
The available research suggests that microneedling may help improve hair density and other hair growth measures in certain circumstances, particularly when combined with established treatments. However, it does not necessarily mean that dormant or permanently damaged follicles can be restored.
The earlier the underlying cause of hair thinning is identified, the easier it may be to determine which treatment options are appropriate.
Are There Risks to Using a Derma Roller on the Scalp?
Microneedling can cause temporary redness, irritation, discomfort or sensitivity. While clinical studies have generally reported mild adverse effects, incorrect technique can increase the risk of skin injury and other complications.
Keeping the device clean and following the manufacturer’s instructions is important when using a derma roller. It should also not be shared with another person.
The American Academy of Dermatology recommends speaking with a dermatologist before using a microneedling device for hair loss, as microneedling can worsen certain conditions and choosing the appropriate device matters.
So, Does a Derma Roller Really Work for Hair Growth?
So, does a derma roller really work for hair growth? The evidence suggests that scalp microneedling can potentially support hair growth, particularly as part of a broader approach to treating pattern hair loss.
Research on microneedling combined with treatments such as minoxidil is more encouraging than research on derma rollers used alone. At the same time, studies specifically examining derma rollers remain limited, and there is no single treatment method that works for everyone.
For this reason, a derma roller is better considered a potential tool for supporting hair growth rather than a guaranteed solution to hair loss. Understanding the cause of hair thinning and choosing an appropriate treatment approach are important steps towards achieving realistic results.
