Patient Guide: Dermalux LED Therapy for Skin Recovery, Acne and Rejuvenation

LED therapy occupies an unusual position in aesthetic medicine. It’s one of the most evidence-supported technologies we use, underpinned by decades of research across wound healing, inflammation and cellular energetics. It’s also one of the most misunderstood, partly because the same term covers everything from medical-grade clinical devices to low-powered consumer gadgets sold with unrealistic claims.

This article is about Dermalux, the clinical LED platform we use at The London Road Clinic, and specifically about what photobiomodulation actually does at the cellular level, what it can deliver, and where its limits sit. We use it both as a standalone treatment and as part of post-procedure recovery protocols following Fractora, microneedling and chemical peels. Understanding where each use case fits is what this guide is for.

What LED Therapy Actually Is

LED stands for light emitting diode. An LED device emits non-coherent, low-intensity light at specific wavelengths. This is the fundamental distinction from laser: laser light is coherent (all waves aligned, high energy density), IPL is broad-spectrum pulsed, and LED is continuous, low-intensity and non-thermal. It doesn’t cut, ablate or heat tissue. It works by being absorbed by specific molecules in cells, triggering a cascade of biological responses.

The process is called photobiomodulation, or PBM. The principle is that certain wavelengths of light, particularly in the red and near-infrared spectrum, are absorbed by cytochrome c oxidase, a key enzyme in the mitochondrial electron transport chain. This absorption increases mitochondrial activity, raises ATP production, and stimulates cellular processes including collagen synthesis, anti-inflammatory signalling and tissue repair.

The mechanism is well characterised in the scientific literature. What varies is the clinical magnitude of effect, which depends on the wavelength, the energy dose, the frequency of sessions, and what condition is being treated.

The Three Wavelengths and What They Do

The Dermalux platform we use offers three wavelengths, and most treatment protocols combine them in a single session.

Blue light, 415nm. This wavelength is absorbed by porphyrins produced by Cutibacterium acnes (formerly Propionibacterium acnes), the bacteria associated with inflammatory acne. The absorbed energy generates singlet oxygen, which is bactericidal. Blue light doesn’t penetrate deeply, but for superficial acne bacteria it’s an effective, antibiotic-free approach to reducing bacterial load. It also has mild anti-inflammatory properties.

Red light, 633nm. This is the primary wavelength for photobiomodulation via cytochrome c oxidase. Red light penetrates into the dermis and stimulates fibroblast activity, increasing collagen and elastin synthesis. It has well-documented anti-inflammatory effects, reduces erythema, and accelerates tissue repair. This is the workhorse wavelength for anti-ageing, rosacea management, and post-procedure recovery.

Near-infrared light, 830nm. The longer wavelength penetrates more deeply than red, reaching subcutaneous tissue and potentially influencing deeper cellular processes. Near-infrared has the strongest anti-inflammatory evidence, reduces oedema and pain, and promotes tissue healing at depth. It’s particularly relevant in post-procedure protocols where we’re managing both superficial and deeper tissue response.

In a combined session, the sequencing of wavelengths allows the protocol to address multiple targets. For an acne patient with associated redness and compromised barrier, blue clears bacteria, red reduces inflammation and supports collagen, and near-infrared promotes deeper tissue repair.

What Dermalux Treats Well

Post-procedure recovery. This is where we use Dermalux most frequently at LRC. Fractora, microneedling and medium-depth peels all produce a controlled inflammatory response in the skin. Dermalux LED immediately after these treatments, or in the days following, reduces the intensity of that inflammation, shortens redness and oedema, supports the wound-healing cascade, and improves the patient’s experience of recovery. The evidence base for LED in post-procedure management is among the strongest in its clinical literature. We recommend it routinely as an add-on to ablative and semi-ablative treatments.

Active acne and comedonal skin. Blue light LED, particularly in a course of 6 to 8 sessions delivered twice weekly, reduces the population of C. acnes at the skin surface. For patients with mild to moderate inflammatory acne where topical or oral antibiotic use is undesirable, LED offers a non-pharmacological approach to bacterial load reduction. It doesn’t address sebum overproduction, follicular hyperkeratinisation, or hormonal drivers of acne, so it works best as part of a broader acne management plan. The adult acne guide sets out the full picture.

Rosacea-associated redness and sensitivity. Red and near-infrared light reduce the chronic low-grade inflammation that drives rosacea erythema. LED is an appropriate treatment alongside other rosacea management strategies, particularly for patients whose skin is too sensitive for more aggressive interventions. It doesn’t address the underlying vascular component of rosacea in the way that Lumecca IPL or laser can, but it supports tissue tolerance and reduces reactivity. The rosacea guide discusses the hierarchy of management in full.

Skin ageing and collagen support. Red light LED stimulates fibroblast activity and collagen synthesis. The cumulative effect of a course is a measurable increase in dermal collagen density, improved skin texture and a reduction in fine surface lines. The results are subtler and slower than Fractora or Profhilo, but LED has the significant advantage of requiring no downtime. For patients who can’t tolerate or don’t want more intensive interventions, a regular LED programme is a clinically sound long-term maintenance strategy.

Barrier repair and sensitive skin. Near-infrared light in particular supports the cellular repair processes that underlie barrier function. For patients with compromised, reactive or sensitised skin, Dermalux offers a low-stimulation way to support recovery without adding inflammatory burden. It pairs well with the principles outlined in the sensitive skin and barrier guide.

Wound healing. The evidence for LED in accelerating tissue repair is well established from surgical and dermatological research. At LRC, this translates to its use after procedures and, in selected cases, to support the management of post-inflammatory marks.

How We Use Dermalux at LRC

We use Dermalux in two contexts.

Standalone courses. A typical standalone course is 6 to 8 sessions, delivered one to two times per week. Each session takes 20 to 30 minutes. The patient lies comfortably under the panel with eyes protected. There’s no sensation beyond mild warmth. There’s no downtime. Patients return to their day immediately. For acne management, rosacea support, or ongoing skin maintenance, this is a low-barrier, sustainable programme.

Post-procedure adjunct. After Fractora, microneedling or a medium-depth peel, we recommend Dermalux as part of the recovery protocol, sometimes in the same appointment, sometimes in the days following. The combination reduces inflammatory burden, shortens the visible recovery period, and supports the collagen-building response we’ve triggered with the primary treatment. The homecare between treatments guide covers the broader recovery principles.

What Dermalux Cannot Do

LED is not a substitute for treatments that produce structural change. It doesn’t resurface skin, remove pigmentation, ablate vessels, reduce fat or significantly tighten lax tissue in the way that Fractora, Lumecca or fillers can.

It doesn’t treat melasma. It doesn’t remove discrete vessels. It doesn’t replace the bacterial and sebum management that moderate to severe acne requires.

The results from LED, while real and supported by evidence, are cumulative and relatively subtle compared to ablative and injectable interventions. A patient expecting Fractora-level results from LED will be disappointed. A patient using it consistently as a maintenance strategy, or as recovery support after stronger treatments, will find it genuinely useful.

Consumer LED devices marketed for home use vary enormously in energy output, wavelength accuracy and clinical relevance. Most deliver a fraction of the dose required to produce the biological effects described in clinical literature. We’re not in a position to assess individual consumer devices, but the distinction between a regulated clinical device and a consumer product matters in this field more than most.

Contraindications

Dermalux is very well tolerated and suitable for most patients, but there are some contraindications and cautions:

• Photosensitive conditions, including systemic lupus erythematosus, porphyria, and certain dermatological conditions where light sensitivity is a feature
• Photosensitising medications, including some antibiotics (particularly tetracyclines), NSAIDs, retinoids, and certain psychiatric medications. We take a medication history at consultation
• Active malignancy in the treatment area, or a history of skin cancer where LED over the area would be inappropriate
• Epilepsy sensitive to flickering light: relevant where pulse mode is used
• Pregnancy: not an absolute contraindication but we take a cautious approach and discuss at consultation
• Direct eye exposure: eyes are protected throughout treatment as standard

If you have any photosensitive condition or are on medication, mention it at consultation. For most patients, Dermalux is one of the lowest-risk treatments we offer.

Frequently Asked Questions

Is Dermalux the same as laser treatment?

No. Dermalux uses low-intensity, non-coherent LED light that works by stimulating cellular processes, not by cutting, heating or ablating tissue. It’s non-thermal and produces no physical trauma to the skin. This is why it has no downtime. Laser produces a controlled injury to stimulate repair; LED stimulates repair without injury. The two work differently and aren’t interchangeable, though they can complement each other well when used in sequence.

How many sessions will I need?

A standalone course is typically 6 to 8 sessions, once to twice a week. For post-procedure recovery, the number and timing depend on what primary treatment you’ve had. For acne, we recommend maintaining sessions until the skin is stable, then reducing frequency. For ongoing skin maintenance, monthly sessions are common once the initial course is complete. We set the plan at consultation rather than applying a fixed number to everyone.

Can it be combined with other treatments?

Yes, and this is where Dermalux is particularly well used. It’s a standard part of our post-Fractora, post-microneedling and post-peel recovery protocols, either immediately after or in the days following the primary treatment. It can also be combined with medical-grade skincare regimens, injectable treatments and other clinic interventions. There are very few treatments it can’t sit alongside.

Is there any downtime?

None. There’s no redness, swelling, peeling or restriction after Dermalux. Patients leave the appointment and continue their day. This is one of its defining clinical advantages, and why it’s a sensible option for patients who can’t accommodate downtime from stronger interventions.

Can Dermalux treat active acne?

Yes, for mild to moderate inflammatory acne. The blue light (415nm) wavelength generates bactericidal singlet oxygen that reduces the population of Cutibacterium acnes at the skin surface. It doesn’t address all the drivers of acne, including sebum production, hormonal influence and follicular blockage, so it works best as part of a wider acne management plan rather than as the only intervention. For more complex or severe acne, a medical consultation is appropriate.

Does it hurt?

No. LED therapy is entirely comfortable. Most patients feel mild warmth or nothing at all during the session. Eyes are protected with goggles or pads throughout, so there’s no visual stimulation from the panel. Patients with sensitive skin occasionally notice very mild warmth on the skin surface, which resolves immediately after the session ends.

Can everyone have LED therapy?

Most people can. The exceptions are patients with photosensitive conditions, those on photosensitising medications, and patients with active malignancy in the treatment area. Pregnancy is a relative caution. Beyond these groups, Dermalux is suitable across all skin types and Fitzpatrick classifications, in all age groups, and is one of the few clinical treatments with essentially no skin-type restrictions.

How long do results last?

For post-procedure recovery, the benefit is in accelerating a healing process that happens once. For acne management, results persist while the treatment programme continues and as long as the skin is otherwise well managed. For collagen support and anti-ageing, results are cumulative and maintained with ongoing sessions, similar to any skin maintenance approach. Monthly sessions after an initial course is the pattern most patients find sustainable.

---

Related reading

• Patient guide: Fractora
• Patient guide: microneedling
• Patient guide: chemical peels
• Adult acne: a medical approach
• Rosacea: causes, treatment and management
• Sensitive skin and the skin barrier
• Homecare between treatments
• Dry and dehydrated skin: causes and treatment