The Definitive Guide to Microneedling

Microneedling, also called collagen induction therapy, uses fine needles to create tiny controlled injuries in the skin. This prompts the skin to produce new collagen and elastin. The evidence supports gradual improvements in acne scarring, skin texture and fine lines, and it helps topical treatments absorb more deeply. On its own, the effect is modest. Its real strength is as an adjunct, amplifying the prescription topicals that do the heavy lifting, whether on facial skin, the scalp or the beard.

Please note, we are an entirely online skin and hair clinic, so we do not offer microneedling. We used to provide it at our former physical clinic, but we now exclusively offer topical skincare treatments that microneedling works best alongside.

What is Microneedling?

Microneedling is a minimally invasive procedure. It uses a device fitted with very fine needles to create thousands of tiny, controlled punctures in the skin. These micro-channels do two jobs. First, they switch on the skin’s wound-healing response, which lays down fresh collagen and elastin. Second, they briefly open the surface, so anything applied afterwards absorbs more readily. The procedure can be done professionally with a powered pen or a medical roller, or at home with a shorter-needled dermaroller. The same principle is now applied to the scalp for hair loss and to the beard for patchy growth.

How Does Microneedling Work?

The needles create micro-injuries that the body treats as small wounds. Healing them sets off a cascade of growth factors, new blood vessels and fresh collagen. Over a course of sessions, this can thicken the skin and soften scars and lines. The second mechanism matters just as much. Because the channels briefly increase the skin’s permeability, actives applied around the treatment penetrate further than they would through an intact barrier. This is why microneedling is rarely worth doing in isolation. The procedure opens the door. The topical you pair it with is what walks through it.

What Does the Evidence Say About Microneedling?

The evidence is strongest for atrophic acne scars and skin texture. A systematic review of randomised trials found microneedling effective for acne scars, both on its own and combined with other treatments. For fine lines and early photoageing, the data is more modest but broadly supportive. A split-face study in photoageing showed dermarolling improved the skin, and that pairing it with other treatments outperformed needling alone. The same pattern holds on the scalp. A small pilot study on female pattern hair loss found that scalp microneedling plus nightly minoxidil produced perceived improvement in ten out of eleven women.

Two honest caveats run through all of it. Most studies are small and short. And microneedling consistently performs better as part of a combination than alone. It is a supportive treatment, not a standalone cure.

What’s the Difference Between At-Home & Professional Microneedling?

The single variable that separates the two is needle depth. Depth determines safety and what the treatment can actually achieve. Below are the main differences between at-home and professional microneedling:

• At-home dermarollers (0.25 to 0.5mm): These reach only the outer skin. Their main value is helping your topicals absorb. They will not remodel scars or reach the dermis, but used carefully they are a reasonable way to get more from topical skincare.
• Professional microneedling (0.5 to 2.5mm): A trained practitioner uses a powered pen or medical roller to reach the deeper dermis. This is where genuine collagen remodelling happens. It is the version with the evidence behind it for scarring, texture and ageing. The depth is matched to your skin and the area treated.

Please beware that longer needles are sold online to the public but these are not a cheap shortcut to professional results. Going deeper at home raises the risk of infection, scarring and hyperpigmentation, particularly in deeper skin tones. Anything beyond superficial dermarolling is better done professionally. If you do want to dermaroll at home, technique, hygiene and safety really matter. Always follow the manufacturer’s instructions.

What About Radiofrequency Microneedling?

Radiofrequency (RF) microneedling is a professional treatment that adds heat to the equation. The needles deliver radiofrequency energy into the dermis as they penetrate. This combines the collagen-stimulating effect of needling with deeper thermal tightening. As a result, it tends to do more for skin laxity and deeper texture than standard microneedling. However, it is a more involved treatment, with more downtime and a higher cost. We explain how RF microneedling compares with traditional microneedling in our post on radiofrequency microneedling.

Can Microneedling Treat Acne Scars & Skin Ageing?

This is where microneedling earns its reputation. For acne scarring, a course can soften the depressed, textured scars that topicals alone struggle to shift. For skin ageing, it can improve fine lines, pore appearance and overall firmness.

The bigger gains, though, come from pairing it with the right prescription actives. Tretinoin is a popular partner. It drives collagen production through a separate pathway, so a retinoid running alongside a microneedling course tends to do more than either does alone (our guide to tretinoin covers this in depth).

Timing matters, though. Do not apply tretinoin, acids or vitamin C immediately after a professional session. The skin is at its most permeable then, and strong actives can cause significant irritation. Stick to bland, barrier-supporting products for the first days, then slowly return to your actives. Your technician will provide you with instructions on duration for stopping and restarting actives. A word of caution on melasma too. Microneedling can help deliver depigmenting agents, but aggressive needling can also worsen melasma. As such, it needs a careful hand and is not a first-line choice.

Does Microneedling Work for Hair Loss?

On the scalp, microneedling works through the same two mechanisms. The wound-healing response stimulates the follicles directly. The micro-channels also help topical minoxidil reach them more effectively. Crucially, the combination is more convincing than microneedling alone. This matters most for the people who respond poorly to minoxidil on its own. Around half do, often because of low scalp sulfotransferase activity, and better delivery may help them. It is best thought of as an adjunct to topical treatment for male and female pattern hair loss, not a standalone fix. We cover the scalp protocol, the evidence and how to combine it safely in our post on microneedling for hair growth, and the wider approach in our minoxidil guide.

Does Microneedling Help Beard Growth?

The beard follows a different hormonal logic to the scalp, which is worth understanding. On the scalp, androgens like DHT drive hair loss, so treatment often works by blocking them. In the beard, the opposite is true. Facial hair growth is androgen-dependent, so the aim is to stimulate the follicles, not suppress hormones. This is why minoxidil is the mainstay for patchy beard growth, as it works through a vascular, non-hormonal route. It is also why DHT blockers have no role in the beard.

Microneedling works on the beard the same way it does on the scalp. Dermarolling the beard before applying a beard growth treatment may improve absorption and add follicular stimulation. That said, the evidence for beards is more limited than for the scalp, and is largely extrapolated from it. Beard serums typically pair minoxidil with supporting actives such as caffeine and melatonin. Our post on minoxidil for beard growth explains how to dermaroll the beard safely.

Is Microneedling Safe?

Microneedling is generally well tolerated. However, it breaks the skin, so it carries real risks if done badly or on the wrong skin. Potential risks and things to be aware of include:

• Expected after-effects: Redness, mild swelling and a sunburn-like feeling for a day or two are normal and settle quickly.
• Infection: This is the main risk with at home devices. A clean, sanitised roller and a clean treatment area are non-negotiable.
• Hyperpigmentation: Overly aggressive treatment can trigger post-inflammatory hyperpigmentation particularly in deeper skin tones.
• When to avoid it: Microneedling should be avoided in active acne, cold sores, skin infections or an inflammatory flare of conditions like rosacea or eczema. It can spread or worsen these.
• Scar-prone skin: Anyone prone to keloid or hypertrophic scarring should be assessed first.

How Do You Get the Best Results from Microneedling?

Like most things in dermatology, microneedling rewards patience and consistency. This applies equally to at home and professional microneedling. The below principles can help improve your outcomes:

• Think in courses instead of single sessions: Most concerns need 3 to 6 professional treatments, spaced 4 to 6 weeks apart. Results build gradually over the months that follow.
• Pair it with the right topical: The procedure amplifies your hair and skincare efforts. For example, retinoids will help with skin ageing goals and minoxidil with scalp or beard hair regrowth.
• Respect the timing: Save your strong actives for a day or two after a professional session, and keep the skin clean and protected in between.
• Protect from the sun: Freshly treated skin is prone to hyperpigmentation, so daily SPF matters more than usual.
• Get the diagnosis right: Microneedling only helps certain problems, so it is worth knowing what you are treating before you start.

Ultimately, microneedling is a genuinely useful treatment, but it is an amplifier rather than a cure. Whether the target is acne scarring, an ageing complexion, a thinning scalp or a patchy beard, the gains come from combining it with the right prescription topical.

Where to Get Microneedling in the UK

Microneedling is not available on the NHS but private skin clinics and med spas offer it. They usually charge based on the size of the treatment area. You can pay per session though buying a course up front usually works out cheaper. RF microneedling and combination treatments with chemical peels for example tend to cost more than traditional dermarolling. If you are considering it, the experience of the practitioner matters most, particularly for sensitive or darker skin and for treating hair loss or scars.

There are of course also at home dermarollers. Just ensure you get them from a reputable provider and at the at-home safe needle lengths. Also follow the instructions carefully with regards to hygiene, technique and aftercare.

At City Skin Clinic, we provide the bespoke topical skincare, hair and beard growth treatments using ingredients like tretinoin, hydroquinone, minoxidil and azelaic acid where appropriate. Our doctors design a plan entirely around your skin, hair or beard needs. You can read more about our custom treatments for skin ageing, hair loss and beard growth, or book a consultation to start. The journey to great skin and hair starts here.

This article is for general information only and is not a substitute for medical advice, diagnosis or treatment. Microneedling should only be performed by a suitably qualified practitioner after an individual assessment. Always consult a qualified medical professional about your skin, hair or treatment options.