Microneedling for hair growth: what it actually does
- It is not just a delivery method. Microneedling stimulates hair growth in its own right, by prompting a natural repair response in the scalp.
- It also opens the door. The tiny channels help active ingredients like growth factors and exosomes reach deeper into the scalp.
- The evidence is strong when combined. Microneedling plus minoxidil consistently beats minoxidil alone in clinical trials.
- Depth and technique matter, which is why it belongs in trained hands, not a home roller used guesswork.
- It is part of every treatment we do, quietly doing two jobs at once.
Microneedling is one of those treatments that sounds far more dramatic than it feels. And if you have a treatment with us, it is already part of what we do, working quietly in the background to make everything else work better.
So what is actually happening when those tiny needles touch your scalp? Two useful things at once.
Job one: it wakes the scalp up
Microneedling uses a device with very fine, short needles to create tiny, controlled channels in the surface of the scalp. These are microscopic and heal quickly, but your body still notices them.
In response, your scalp switches on its natural repair and renewal process. That healing response releases its own growth signals and stimulates the dermal papilla cells, the cells at the base of each follicle that play a central role in growing hair. In other words, the controlled micro injury itself nudges your follicles toward activity.
Think of it like aerating a lawn. The small holes look like damage, but they are exactly what lets the soil breathe, absorb and grow thicker grass.
Job two: it opens the pathways
The second job is about delivery. Your skin is a very effective barrier, that is its purpose, but it also means active ingredients applied to the surface struggle to get where they are needed.
The micro channels temporarily create direct pathways into the scalp, so the good stuff we deliver, your own growth factors in PRP and PRF, or exosomes, can penetrate far deeper than they would on their own.
Stimulate, and deliver
Microneedling is valuable on its own, but it becomes far more powerful as the partner that carries active ingredients deep into the scalp.
Triggers the repair response
Controlled micro channels switch on the scalp's natural healing, stimulating the dermal papilla cells that drive hair growth.
Opens pathways for actives
The same channels let growth factors and exosomes reach deeper into the scalp than surface application ever could.
Does it actually work? What the evidence says
This is where microneedling earns its place, because the research is genuinely supportive, particularly in combination.
Across multiple randomised trials and meta analyses, microneedling combined with topical minoxidil produced significantly more hair growth than minoxidil alone.
Systematic reviews and RCTs, Journal of Cosmetic Dermatology and others, 2018 to 2024.
One frequently cited trial found that adding microneedling roughly doubled the hair density improvement compared with minoxidil on its own. Researchers are honest that microneedling alone has a more limited effect, which is exactly the point: its real strength is as a partner, amplifying whatever active treatment it is paired with.
Why depth and technique matter
Not all microneedling is equal. The depth of the needles, the pattern, the pressure and the hygiene all affect both safety and results. Too shallow and it does little. Done carelessly it risks irritation or uneven treatment.
This is one of the honest reasons a home roller is not the same as clinical microneedling. In the studio it is performed to a considered depth, with sterile single use tips, as part of a planned treatment, not guesswork in the bathroom mirror.
Because microneedling delivers active ingredients so effectively, we deliberately avoid numbing cream during treatment. Local anaesthetics can interfere with the very growth factors we are working to deliver, so we protect your results and manage comfort in other ways instead.
See it explained at consultation
We walk you through exactly how your treatment works before anything begins. The consultation and scan are complimentary.
Book a complimentary consultationCrystal, Registered Nurse
Crystal is the founder of Scalp Series and a registered nurse who works exclusively in hair and scalp restoration. She holds a Graduate Diploma in Cosmetic Nursing and Injectables and a Master of Nursing Science, is currently studying toward certification as a trichologist with the International Association of Trichologists, and personally performs every treatment at the studio.
Medically reviewed before publication. Last updated July 2026.
