How Deep Does Microneedling Really Need to Go?

Microneedling has become well known for its ability to support collagen production and improve the appearance of concerns such as fine lines, uneven texture and acne scarring. But one question comes up again and again: does going deeper mean getting better results?

The short answer is not necessarily.

Microneedling works by creating controlled micro-injuries within the skin. These tiny injuries trigger the skin's natural wound-healing response, involving a cascade of cellular activity that can ultimately support the production and remodelling of collagen and other components of the skin's extracellular matrix.

The aim isn't simply to cause as much trauma as possible. It's to create an appropriate, controlled stimulus for the skin and the concern being treated.

More bleeding doesn't mean a better treatment

Microneedling can sometimes produce pinpoint bleeding, and this is used as a clinical endpoint in a number of published treatment protocols. But the amount of blood you see isn't a measure of how successful a treatment will be.

The appropriate treatment depth depends on several factors, including the area being treated, the thickness of the skin, the concern being targeted and the device being used. Different areas of the face can require different approaches — which is why microneedling shouldn't simply be about selecting the deepest setting possible.

What we're trying to achieve is a controlled injury that stimulates the skin's repair response, while avoiding unnecessary trauma. Redness and pinpoint bleeding can be normal treatment responses, but a dramatically bloody treatment shouldn't be confused with a more effective one.

So, how deep does microneedling need to go?

There isn't one universal microneedling depth that's right for every person, every area of the face or every skin concern.

The depth chosen should depend on what we're trying to achieve, the area being treated and the individual skin in front of us. Skin thickness varies across the face, and different concerns may require different treatment approaches.

This is also where context matters when looking at research. For example, a study comparing 1.5 mm with 2.5 mm for atrophic acne scarring found greater improvement with the deeper treatment. But that doesn't mean 2.5 mm is automatically “better” microneedling — the study was specifically treating established acne scars, where deeper dermal remodelling was the goal.

For general skin rejuvenation, research uses a variety of treatment protocols, and there still isn't a single standardised depth proven to be optimal for everybody. A 2025 systematic review of facial rejuvenation studies found encouraging results from microneedling overall, but also highlighted variation between treatment protocols and the need for further research.

This is why I prefer to think about microneedling in terms of creating the right level of controlled stimulation — rather than simply asking how deep we can go.

What about 0.5 mm?

A 0.5 mm setting can still create a genuine controlled injury within the skin. Research looking at microneedling penetration has shown that a 0.5 mm setting can create measurable microchannels, confirming that treatment doesn't need to look aggressive to physically penetrate the skin.

However, that doesn't mean 0.5 mm is the perfect depth for every concern. Deeper treatment may be appropriate for certain indications, such as established acne scarring, while more superficial approaches may be appropriate when working with other areas or concerns.

The important part is choosing the depth with a purpose — not choosing a depth simply because deeper sounds more effective.

Why I don't take a 'deeper is better' approach

At Beau.t, microneedling isn't about creating the most dramatic treatment response possible. My approach is to work at a level that's appropriate for your skin, the area being treated and what we're actually trying to improve.

More aggressive treatment can mean more inflammation and downtime, but that doesn't automatically translate into a better result. I would rather treat the skin with purpose, monitor how it responds and build results over a considered course of treatments where appropriate.

Microneedling should be about creating enough controlled stimulation to encourage the response we want — not creating unnecessary trauma just because we can.

The takeaway

Microneedling can be a brilliant treatment for supporting skin renewal and improving concerns such as texture, fine lines and acne scarring — but more isn't always better.

The right treatment should be based on your individual skin, the concern we're treating and the response we're trying to create. Depth is simply one part of that treatment plan.

At Beau.t, the focus is always on considered, personalised treatment rather than chasing the most aggressive response.

Not sure whether microneedling is right for your skin?
Book your first skin appointment and we'll start by looking at your skin, your concerns and what you'd like to achieve.

References & further reading
Sasaki GH. Micro-Needling Depth Penetration, Presence of Pigment Particles, and Fluorescein-Stained Platelets: Clinical Usage for Aesthetic Concerns. Aesthetic Surgery Journal. 2017;37(1):71–83.
El-Domyati M, Moftah NH, Ahmed AM, Ibrahim MR. Evaluation of microneedling depth of penetration in management of atrophic acne scars: a split-face comparative study. International Journal of Dermatology. 2024;63:632–638.
El-Domyati M et al. Microneedling Therapy for Atrophic Acne Scars: An Objective Evaluation. Journal of Clinical and Aesthetic Dermatology. 2015;8(7):36–42.
Foppiani JA, Fanning JE, Beltran K, et al. Microneedling for Facial Rejuvenation: A Systematic Review. Aesthetic Plastic Surgery. 2025;49:4949–4960. 
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