Microneedling Academy · Clinical resource
Microneedling, technique first
A professional reference page in the academy's voice: mechanism before settings, protocol before products. What the micro-wound actually does, how to choose depth by anatomy rather than habit, how a disciplined in-room protocol runs, and where the evidence for combinations genuinely stands.
Why this page exists
Microneedling is one of the most performed procedures in aesthetic medicine, and one of the least rigorously taught. Devices are sold with settings; biology is left to improvisation. This page sets out the clinical fundamentals the way the academy teaches them: what the micro-wound actually does, how to choose depth by anatomy rather than habit, how a disciplined in-room protocol runs, and where the evidence for combinations genuinely stands.
Precision over aggression: the biology of the micro-wound first, the device second.
The biology of the micro-wound
Medical microneedling creates thousands of controlled micro-channels through the epidermis into the dermis without ablating tissue. A standard 192-needle roller with 2 mm needles, rolled fifteen times over an area, produces roughly 250 channels per square centimetre. The injury is real but deliberately sub-catastrophic: enough to start the wound-healing cascade, not enough to scar.
That cascade is the treatment. Microinjury triggers the release of growth factors - PDGF, TGF-alpha and TGF-beta, FGF - and the migration and proliferation of fibroblasts. Around five days after injury a fibronectin matrix forms, scaffolding the deposition of new collagen. Histological series report neocollagenesis reaching 400-600 micrometres deep with a 1.5 mm needle, and up to a 400% increase in collagen and elastin deposition six months after four sessions spaced one month apart, with the new collagen organised in a normal lattice pattern rather than the parallel bundles of scar tissue.
Two clinical consequences follow. First, the result matures for three to six months after the last session, so outcomes are judged late, not in the mirror on the day. Second, because there is no thermal component, standard microneedling carries a markedly lower risk of burns and dyschromia than ablative resurfacing and can be used across all Fitzpatrick phototypes, with conservative settings in darker skin.
Devices: what actually matters
Rollers, stamps, motorised pens and radiofrequency (RF) devices all deliver needles into skin; they differ in control. Pen devices with disposable cartridges dominate professional practice for three reasons: perpendicular, uniform penetration independent of hand pressure; adjustable depth per zone; and a sealed, single-use fluid path that answers the cross-contamination problem of rollers. RF microneedling adds thermal coagulation to the mechanical channel - more remodelling potential, more risk, and a different consent conversation.
Whatever the device, the non-negotiables are sterile single-use needle cartridges and an honest regulatory picture: clearance status and permitted claims vary by market and by device, and are worth checking for the specific unit in your clinic rather than assumed from a competitor's marketing.
Depth selection: needle length to tissue target
Depth decides which dermal structure you engage, and therefore what biology you can expect. A working reference:
Interval follows depth: superficial sessions may repeat at two to four weeks; 0.75-1.25 mm work at four to six; scar remodelling at 1.5-2.5 mm at six to twelve. With a 1.5 mm device, three weeks is the floor between sessions - collagen needs the time you give it.
Depth by facial zone
Skin thickness varies several-fold across the face, so a single depth setting across all zones is either over-treating thin zones or under-treating thick ones. A zone-based starting framework, to be individualised:
The in-room protocol, phase by phase
- Consultation and contraindication screening - at every visit, not only at intake. Health status changes between appointments: new retinoids, a cold sore, recent sun, recent injectables.
- Double-cleanse and degrease. Residual oil, SPF or product film makes needles skip and channels uneven.
- Topical anaesthesia under occlusion, 25-40 minutes. Occlusion roughly doubles to quadruples anaesthetic depth; an under-numbed patient moves, tenses and does not rebook.
- Anaesthetic removal and second degrease, then treatment serum. Appropriate: hyaluronic acid, peptide complexes, growth-factor formulas, sterile professional products. Not during passes: alcohol-based serums, AHAs, BHAs, retinoids - they enter open channels and provoke disproportionate reactions, and non-sterile topicals have caused granulomas.
- Zone-based passes: two to three directional passes per zone (vertical, horizontal, diagonal), device perpendicular, deliberate speed, serum re-applied between passes. Sequence forehead to temples to cheeks to chin and jawline to perioral, periorbital last at the shallowest setting.
- Immediate recovery within five to ten minutes of the final pass. Channel-closure kinetics reported in professional education literature put the window short: channels begin closing within 15-20 minutes and are largely resealed within 45-90, and the calming, occlusive post-treatment step belongs inside it.
- Structured aftercare, written as well as verbal: no actives (retinoids, acids, vitamin C) for 72 hours, no makeup for 24-48, no heat or vigorous exercise for 24-48, gentle cleanser and moisturiser, SPF every morning without exception, and clear instructions on what should prompt a call to the clinic.
A complete professional treatment runs 70-110 minutes including anaesthesia. Compressing the protocol - short numbing, skipped recovery - is the most common source of complaints and suboptimal outcomes.
Endpoints: reading the skin, not the clock
The treatment endpoint is clinical, not numerical. Uniform erythema with fine pinpoint bleeding signals dermal engagement; confluent bleeding, bruising or non-uniform petechiae signal over-treatment and demand adjustment - less pressure, shallower depth, or a stop. Over bony prominences, heavy pressure with longer needles has produced tram-track scarring; let the device do the work.
Combinations: where the evidence stands
PRP. The best-studied partner. In a split-face trial of 25 patients with atrophic acne scars, physician assessment rated an excellent response in 18.5% of PRP-plus-microneedling sides versus 7% with vitamin C plus microneedling (Chawla, 2014). In androgenetic alopecia, microneedling plus 5% minoxidil outperformed minoxidil alone, with 82% of the combination group reporting greater than 50% improvement against 4.5% on minoxidil alone (Dhurat et al., 2013).
Exosomes. A 2026 systematic review of microneedling with exosomes found promising early results across skin ageing, hyperpigmentation, scarring and androgenetic alopecia - and is explicit that larger studies with longer follow-up are required before safety and efficacy can be asserted. Promising, not proven: exactly how it should be presented to patients. Topical use only.
Pigmentary indications. For melasma, microneedling works as a delivery adjuvant at conservative depths (0.25-0.75 mm); deep repeated injury raises the PIH risk you were trying to treat. In stable vitiligo, needling combined with topical 5-fluorouracil outperformed the drug alone in a randomised study.
Timing discipline. Aggressive peels and ablative lasers are spaced away from deep microneedling sessions; stacking cumulative injury is not synergy.
Contraindications and cautions
- Active acne, herpes labialis or other local infection in the treatment area - defer.
- Moderate to severe chronic skin disease (eczema, psoriasis) active in the treatment area.
- Anticoagulant therapy and blood dyscrasias.
- Keloid tendency - individual assessment before any needling.
- Pregnancy.
- Recent isotretinoin - the historical mandatory six-to-twelve-month deferral is increasingly questioned in the current literature; timing is an individual clinical decision.
- History of herpes simplex - consider antiviral prophylaxis.
The common adverse events are transient erythema and irritation settling within hours to days. The reported rarities - post-inflammatory hyperpigmentation, acne flare, herpes reactivation, local infection, allergic or granulomatous reactions - map almost one-to-one onto breaches of the protocol above. Complications in microneedling are usually process failures, not bad luck.
From fundamentals to mastery
This page covers the floor, not the ceiling. MICRONEEDLING.5D - the academy's forthcoming textbook by Dr Nenad Stankovic and Prof. Dr Ali Kashif - builds from these fundamentals through formulation physics, scar and pigmentation protocols, combination therapy and complications rescue, to the 5D Protocol: Depth, Density, Dynamics, Deliverables and Diagnostics as one decision framework. Courses built on the same ladder are in development. Nothing here is on sale yet; register your interest on the academy page and you will hear first.
References
Singh A, Yadav S. Microneedling: advances and widening horizons. Indian Dermatol Online J. 2016;7(4):244-254. doi:10.4103/2229-5178.185468
Dayan E, Weir DD, Rohrich RJ, Ross EV. Maximizing safety with microneedling. In: The Art of Aesthetic Surgery (anatomy zone mapping and device safety chapter).
Dhurat R, Sukesh M, Avhad G, Dandale A, Pal A, Pund P. A randomized evaluator blinded study of effect of microneedling in androgenetic alopecia: a pilot study. Int J Trichology. 2013;5(1):6-11. doi:10.4103/0974-7753.114700
Chawla S. Split face comparative study of microneedling with PRP versus microneedling with vitamin C in treating atrophic post acne scars. J Cutan Aesthet Surg. 2014;7(4):209-212. doi:10.4103/0974-2077.150742
Alqam M, Wamsley CE, Hitchcock T, Jones BC, Akgul Y, Kenkel JM. Efficacy and tolerability of a microneedling device for treating wrinkles on the neck. Aesthet Surg J. 2022;42(10):1154-1160. doi:10.1093/asj/sjac085
Dhaliwal NK, Sokhal BS, Gkini MA, et al. The use of microneedling with exosomes in dermatology: a systematic review. J Cosmet Dermatol. 2026;25:e70881. doi:10.1111/jocd.70881
Ramadan F. Microneedling: monotherapy or adjuvant treatment? Journal of Aesthetic Nursing, 2025. aestheticnursing.co.uk