Laser Dermatology Treatments

A Complete Patient & Professional Guide
By Professor Vishal Madan  |  MBBS Hons, MD, FRCP, MBA | Consultant Dermatologist & Laser Surgeon

Part of the ukdermatologist.co.uk Knowledge Hub

The Science of Dermatologic Lasers

Understanding how medical lasers work — the foundation of safe, effective skin treatment.

Laser technology has revolutionised modern dermatology. From removing decades of sun damage to reshaping scar tissue with surgical precision, lasers now play a key role in both medical and aesthetic skin treatments. But what exactly is a dermatological laser, and how does it achieve such precise results without damaging the surrounding skin?

What Is a Laser?

The word LASER is an acronym: Light Amplification by Stimulated Emission of Radiation. A laser produces a single-wavelength beam of coherent, collimated light — meaning all photons travel in the same direction and are perfectly synchronised. This is fundamentally different from ordinary white light, which spans the visible spectrum and radiates in all directions. Because a laser emits a single, precise wavelength, it can be tuned to interact selectively with specific molecules in the skin.

Selective Photothermolysis: The Guiding Principle

The theoretical foundation of modern laser dermatology was laid in 1983 by Anderson and Parrish at Massachusetts General Hospital. Their landmark principle — selective photothermolysis — explains how a laser can destroy a target structure in the skin without damaging the surrounding tissue.

Three variables must align for selective photothermolysis to work:

• Wavelength: The laser's wavelength should be optimally absorbed by the target chromophore — the molecule that absorbs light. Common chromophores in the skin include oxyhaemoglobin (in blood vessels), melanin (in pigmentation and hair follicles), and water (in dermal tissue).

• Pulse Duration: The laser pulse must be shorter than the target's thermal relaxation time — the time it takes for the target to lose half its heat to surrounding tissues. This limits heat damage to the target alone.

• Fluence (Energy Density): The energy delivered per unit area (measured in J/cm²) must be sufficient to thermally destroy the target without under- or overdosing.

When these three parameters are properly matched to a patient's skin type and clinical issue, lasers deliver impressive results with a dependable safety profile.

Key Laser Parameters Explained

Beyond the three pillars of selective photothermolysis, dermatologists regularly modify several other parameters.

• Spot Size: Larger spot sizes enable deeper penetration due to reduced scatter. Smaller spots provide accuracy for very small lesions.

• Pulse Duration: Measured in milliseconds, microseconds, or nanoseconds. Longer pulses induce a heating effect (photothermal); shorter pulses generate photomechanical or photoacoustic shockwaves (as seen in tattoo removal).

• Cooling: Dynamic cooling devices (DCD), contact cooling, or chilled air protect the epidermis during treatment, improving both comfort and safety — particularly in darker skin types.

• Repetition Rate: How often pulses are fired, affecting treatment speed and cumulative heat build-up.

Professor Madan has begun integrating AI-assisted laser parameter optimisation into his clinical workflow, using a six-module framework that includes machine learning, interpretability, and bias auditing — ensuring that parameter selection is not only evidence-based but also personalised to each patient's skin profile.

Types of Dermatology Lasers

Different lasers target different chromophores. Knowing which laser does what is essential to matching treatment to condition.

Vascular Lasers

Pulsed Dye Laser (PDL) — VBeam Perfecta

The pulsed dye laser (PDL), most commonly the VBeam Perfecta, emits light at 595 nm — a wavelength strongly absorbed by oxyhaemoglobin, the red pigment in blood. This makes it the gold standard for treating vascular lesions, including:

• Rosacea and facial redness

• Port wine stains or birthmarks

• Facial telangiectasia (thread veins)

• Poikiloderma of Civatte

• Hypertrophic scars and keloids

• Viral warts (via targeting dermal vasculature)

The VBeam employs a dynamic cooling device (DCD) that releases a brief cryogen spray microseconds before each pulse, protecting the epidermis and making treatment more tolerable with minimal downtime. The treatment generally results in a bruise (purpura) that disappears within seven to ten days or can be carried out at sub-purpuric settings for a no-downtime option.

The Vbeam Laser is one of the best technologies, using advanced technology and has become the preferred treatment for facial redness. Other lasers, such as those with 532 and 1064 nm wavelengths, are also effective, but several studies have shown the dominance of the 595 nm V beam laser in treating facial redness caused by rosacea or port wine stains.

Professor Madan has been using the V beam Laser since 2006 and has tried three different models.

An older version of Vbeam laser 

Since then, newer models have been in use replacing the wavelength to 595nm- The Vbeam Perfecta

The Vbeam Perfecta is the most reliable of all Vbeam laser models.

Prof Madan was among the first to use the Vbeam Prima laser in the UK when it launched in 2019. However, the dual wavelength technology proved less reliable, and the system has been redeveloped by Candela.

Now, Prof Madan uses the brand-new Vbeam PERFECTA laser, which is the most reliable model.

The Vbeam Pro has been launched in the USA but still lacks a CE mark and is likely to be available in the UK by 2027.

The bruising mode tends to work better at reducing redness. The non-bruising mode can achieve a similar degree of improvement, but more sessions are needed to reach the same level of progress.

Nd:YAG 1064 nm Laser

The long-pulsed Nd:YAG laser at 1064 nm penetrates more deeply into the dermis than PDL and is absorbed by both oxyhaemoglobin and deoxyhaemoglobin. It is particularly valuable for:

• Larger, deeper leg veins and reticular veins

• Resistant facial veins in thicker or darker skin

• Laser hair removal in all Fitzpatrick skin types, including dark skin (Types IV–VI)

• Onychomycosis (nail fungal infection)

As 1064 nm is less preferentially absorbed by melanin than shorter wavelengths, it is the safest laser for hair removal in patients with darker skin tones.

Pigment-Targeting Lasers

Q-Switched Nd:YAG (1064 nm and 532 nm)

Q-switched lasers emit extremely brief pulses — in the nanosecond range — generating photomechanical (acoustic) shockwaves that break down pigment granules and tattoo ink particles into fragments small enough for the immune system to clear. The Q-switched Nd:YAG is used for:

• Tattoo removal (all colours with dual-wavelength capability)

• Dermal melanocytoses (naevus of Ota, naevus of Ito)

• Solar lentigines and café-au-lait macules

• Melasma (with careful, staged treatment protocols)

The 1064 nm wavelength is safer for darker skin: the 532 nm (frequency-doubled KTP) wavelength targets red and orange pigments. Picosecond lasers (e.g., PicoSure, PicoWay) deliver even shorter pulses, improving clearance of resistant tattoos and pigmentation with fewer sessions.

The following are commonly treated lesions with QS Lasers based on whether the pigment or chromophore is epidermal or dermal or mixed location.

Epidermal	Dermal
Freckles Lentigenes Labial melanotic macules Flat seborrhoeic keratoses	Naevus of Ota Naevus of Ito Hori’s naevus Mongolian blue spot Drug induced pigmentation

Mixed Pigmentation

Melasma/ Becker’s Naevus/ Café au lait macules

Source : Madan V, August PJ. Expert Review of Dermatology 2007; 5,663-670

KTP Laser (532 nm)

The potassium-titanyl-phosphate (KTP) laser at 532 nm targets both oxyhaemoglobin and superficial melanin. It is well-suited to superficial pigmented lesions, epidermal melasma, and small facial telangiectasia.

Ablative Resurfacing Lasers

CO₂ Laser (10,600 nm)

The carbon dioxide laser is the most powerful resurfacing tool in dermatology. Its 10,600 nm wavelength is absorbed by water in tissue, vaporising the epidermis and superficial dermis with great precision. Fractional CO₂ delivery (e.g., Lumenis UltraPulse) creates thousands of microscopic treatment zones surrounded by untreated 'bridges' of healthy tissue, dramatically speeding up healing compared to fully ablative treatment. Applications include:

• Deep acne scarring (boxcar types)

• Rhinophyma

• Photoageing and rhytides

• Epidermal and dermal benign lesions like seborrhoeic keratoses and moles

The Lumenis UltraPulse is the gold-standard carbon dioxide Laser with unparalleled power, efficacy, and safety record.

Erbium:YAG Laser (2940 nm)

The Er:YAG laser at 2940 nm is absorbed by water approximately 16 times more effectively than CO₂, making it more precise but less potent for collagen contraction. It is preferred for superficial resurfacing on fairer skin types and in cases where minimal downtime is desired. Fractional Er:YAG platforms provide excellent results for fine lines and mild to moderate acne scars.

Please see below conditions which can be treated with the CO2 laser.

Source: Madan V. Dermatological applications of carbon dioxide laser. J Cutan Aesthet Surg. 2013;6:175-7

Below are some examples of Prof Madan’s CO₂ laser treatments.

Non-Ablative Fractional Lasers

Non-ablative fractional lasers (e.g., Fraxel 1550 nm, Palomar 1540 nm) heat the dermis without removing the epidermis. They stimulate new collagen formation through controlled thermal injury and are popular for:

• Mild to moderate acne scars

• Melasma and pigmentation irregularities

• Stretch marks

• Periorbital rhytides

Downtime is shorter than with ablative lasers, typically lasting three to five days of swelling and redness, but usually three to five sessions are required to achieve the same results as a single ablative treatment.

Safety Considerations in Laser Dermatology

Laser treatment is safe when performed by an experienced, medically qualified practitioner who understands skin biology, laser physics, and patient-specific risk factors.

Skin Type Assessment (Fitzpatrick Scale)

The Fitzpatrick Phototype Scale (I–VI) categorises skin from pale (Type I, always burns, never tans) to deeply pigmented (Type VI, never burns). The scale serves as the basis for every laser safety assessment because melanin competes with target chromophores for laser energy. In darker skin types (III–VI), there is an increased risk of post-inflammatory hyperpigmentation (PIH), hypopigmentation, or blistering if unsuitable laser parameters or wavelengths are used.

Safe management strategies for darker skin include: using longer wavelengths (Nd:YAG 1064 nm), lower fluences, longer pulse durations, appropriate epidermal cooling, and conservative step-up protocols.

Risk Factors and Contraindications

• Active skin infection (herpes simplex, impetigo) — antiviral prophylaxis is given before ablative laser procedures

• Isotretinoin use within 6–12 months — risk of hypertrophic scarring with ablative treatments

• Pregnancy — most laser treatments are deferred. It is important to understand that lasers are not harmful to the unborn child; however, since nearly all Skin laser treatments are elective procedures, it would be advisable to delay the treatment until after the baby is born.

• Active tanning or recent sun exposure — raises epidermal melanin levels and

• risk of Post-Inflammatory Pigmentation

• Photosensitising medications — some antibiotics, diuretics, and herbal supplements increase photosensitivity. A full list can be seen here

• https://bmla.co.uk/drugs-and-laser-ipls/

• Koebnerising conditions (e.g., vitiligo, psoriasis) — laser trauma may trigger isomorphic responses

• Personal or family history of keloid scarring — heightened caution with ablative or high-energy treatments

Epidermal Cooling

Epidermal cooling is an important safety measure. The three main methods are dynamic cooling devices (DCD, cryogen spray), contact cooling (chilled sapphire windows), and cold air blowers. Cooling lowers epidermal heat and pain, expands the therapeutic margin, and is especially vital in darker skin types where epidermal melanin absorbs competing laser energy.

Who Should Perform Laser Treatments?

In the United Kingdom, laser and intense pulsed light (IPL) treatments are classified as non-surgical cosmetic procedures. Current regulatory guidance from the Care Quality Commission (CQC) and the Medicines and Healthcare products Regulatory Agency (MHRA) strongly advocates that treatment should be delivered by or under the direct supervision of a qualified medical professional. The Independent Review of the Regulation of Cosmetic Interventions (the Keogh Review) recommended that lasers and IPL should be restricted to registered healthcare professionals.

Please read Prof. Madan’s contribution to the Keogh review (2013) in Appendix 3 – Risks posed by laser treatments.

https://assets.publishing.service.gov.uk/media/5a7a25dee5274a319e77831c/Review_of_the_Regulation_of_Cosmetic_Interventions.pdf

Professor Madan is a Consultant Dermatologist and specialist laser surgeon with two decades of experience treating complex laser cases, including darkly pigmented skin, resistant pigmentation disorders, and post-inflammatory sequelae.

Post-Treatment Care and Downtime

Post-treatment care is as important as the treatment itself. General principles include:

• Strict sun avoidance and SPF 50+ sunscreen for a minimum of four to six weeks post-treatment

• Gentle skin care during the healing period (fragrance-free, non-comedogenic products)

• Avoidance of exfoliants, retinoids, and acids until the skin barrier has fully recovered

• Barrier emollients are applied frequently to support re-epithelialisation after ablative procedures

• Antiviral prophylaxis (acyclovir) for patients undergoing ablative facial resurfacing

Laser Treatment for Rosacea

Rosacea is one of the most common and most successfully treated conditions in laser dermatology.

Rosacea is a chronic inflammatory skin condition affecting about one in ten adults in the UK. It manifests as persistent redness in the centre of the face, episodes of flushing, visible blood vessels (telangiectasia), inflammatory papules and pustules, and, in its most severe form, skin thickening (rhinophyma). While topical and oral medications help manage the inflammation, they have limited effectiveness against fixed background redness, flushing and telangiectasia — this is where laser treatment offers the best results.

Why Lasers Work for Rosacea

The redness of rosacea results from dilated, abnormal blood vessels in the dermis. These vessels contain oxyhaemoglobin, which absorbs laser energy at specific wavelengths—mainly 577–600 nm (close to oxyhaemoglobin's absorption peak) and 1064 nm. When laser energy is absorbed by haemoglobin, it generates heat within the vessel wall, leading to coagulation and collapse. The immune system then gradually clears the vessel remnants over the following weeks, reducing visible redness and flushing.

Which Lasers Are Used for Rosacea?

The pulsed dye laser (VBeam Perfecta, 595 nm) is the most widely used and best-supported laser for treating rosacea. Clinical studies and experience consistently show a 50–75% reduction in telangiectasia and background erythema after two to three sessions. The long-pulsed Nd:YAG (1064 nm) is preferred for patients with darker skin (Fitzpatrick Types IV–VI) or for treating thicker, deeper facial veins that do not fully respond to PDL. Intense pulsed light (IPL) is a non-laser broadband light device that also yields good results for mild to moderate rosacea, though it offers less precision than a single-wavelength laser.

What to Expect from Rosacea Laser Treatment?

No specific pre-treatment preparation is needed; makeup needs to be removed. During the procedure, most patients describe the sensation as a brief snap of an elastic band with each pulse. The VBeam's cryogen cooling system significantly reduces discomfort. A typical session lasts 5-10 minutes, depending on the area treated. Immediately afterwards, the skin may appear mildly red or bruised (purpura). Sub-purpuric settings produce less bruising but may require more sessions. Patients generally begin to see improvement two to four weeks after each session as the body clears the treated vessels.

How VBeam Laser Treats Rosacea?

The VBeam Perfecta is the gold standard laser for vascular rosacea — here is precisely how it works.

The VBeam Perfecta is a pulsed dye laser produced by Candela Corporation. It emits laser light at a wavelength of 595 nm — a precise point in the yellow-to-orange spectrum that closely aligns with the secondary absorption peak of oxyhaemoglobin. This physical property underpins the VBeam's notable selectivity for blood vessels.

The VBeam Treatment Sequence

When the VBeam emits a pulse, the 595 nm photons penetrate the epidermis and are selectively absorbed by oxyhaemoglobin in the dermal microvasculature. The absorbed energy is converted into heat within the vessel, raising the temperature sufficiently to denature endothelial proteins and induce thrombosis within the vessel lumen. The pulse duration — usually from 0.45 to 40 milliseconds — is calibrated to be shorter than the thermal relaxation time of the target vessel, thereby confining the thermal injury to the vessel wall and preventing damage to surrounding collagen and dermis.

The VBeam's dynamic cooling device (DCD) delivers a precisely timed cryogen spray to the skin surface just before each laser pulse. This epidermal cooling achieves three aims: it protects the epidermis from thermal damage, reduces pain, and enables the use of higher fluences to safely treat deeper or more resistant vessels.

VBeam Settings for Rosacea

Treatment parameters are customised based on Fitzpatrick skin type, vessel calibre, and anatomical location. Typical fluences for facial rosacea range from 6–10 J/cm² with a 10 mm spot size. In fair-skinned patients, purpuric (bruising) settings provide more intense treatment per session but require 7–10 days of social downtime. Sub-purpuric settings (lower fluences, larger spots) enable patients to return to work immediately and are preferred by many, despite needing additional sessions.

Professor Madan has extensive experience with VBeam treatment across all skin types and across his NHS and private practice. He has performed more than 10,000 VBeam sessions to date. He adjusts parameters based on a comprehensive pre-treatment assessment, including Fitzpatrick typing, previous laser history, current topical treatments, and vascular pattern severity.

VBeam Laser Explained

Everything patients need to know about the VBeam — from consultation to results.

The VBeam Perfecta by Candela is the world's most scientifically validated pulsed dye laser. It has been the focus of over 200 peer-reviewed clinical studies and is utilised in dermatology departments worldwide for a wide range of vascular and pigmentary conditions.

What Can VBeam Treat?

• Rosacea — persistent background erythema and telangiectasia

• Port wine stains — congenital vascular birthmarks

• Spider naevi — individual vascular lesions

• Facial thread veins

• Poikiloderma of Civatte — sun-induced vascular change on the neck

• Venous lakes

• Cherry angioma (Campbell de Morgan spots)

• Scrotal and Vulval angiokeratomas

• Hypertrophic scars and keloids

• Viral warts

What Does VBeam Feel Like?

The most common description from patients is a brief snap — similar to a rubber band flicking against the skin — at each laser pulse. The integrated cryogen cooling system (DCD) activates microseconds before each pulse, pre-cooling the skin surface so that the laser energy reaches the vessels below without burning the overlying epidermis. Most patients find the procedure very tolerable; topical anaesthetic cream can be applied beforehand for particularly sensitive patients.

Is There Any Downtime?

This depends on the treatment settings chosen. At purpuric settings (the most clinically effective), the skin develops a bruised, purple discolouration that usually peaks between days one and three and fully resolves by days seven to ten. At sub-purpuric settings, the skin appears slightly pink for a few hours. Neither setting carries a significant risk of scarring when performed correctly. Patients are advised to wear SPF 50+ sunscreen and avoid sun exposure for four weeks after treatment.

Below are some of Prof Madan’s own treatment results.

1.    Bruising after Vbeam- not all treatments result in bruising, but this is a typical example of intense bruising.

2.    Facial thread veins after VBeam 

3.    Rosacea 

4.    Flushing 

5.    Spider Veins

6.    Venous Lakes

7.    Radiotherapy veins

8.    Red Birthmarks 

9.    Cherry Angiomas ‘Campbell de Morgan Spots’

10.   Warts after PDL VBeam

11. Essential ‘leg veins’ telangiectasia after VBeam PDL 

Laser Treatment for Redness in the Face

Facial redness — whether from rosacea, sun damage, or broken capillaries — can be safely and effectively treated with the right laser.

Facial redness is a common concern that patients present to a dermatologist. It covers a broad range of causes: rosacea, post-inflammatory erythema after acne, sun-induced telangiectasia, poikiloderma of Civatte, spider naevi, essential telangiectasia, and hereditary haemorrhagic telangiectasia. Before planning laser treatment, it is essential to accurately diagnose the cause of redness, as the ideal laser type, settings, and additional management vary depending on the condition.

Which Laser Is Best for Redness on the Face?

The pulsed dye laser (PDL) at 595 nm remains the preferred treatment for most facial redness conditions in lighter skin types (Fitzpatrick I–III). Its wavelength closely matches the oxyhaemoglobin absorption spectrum, and its safety and effectiveness record is unmatched in peer-reviewed studies. For patients with darker skin (Fitzpatrick IV–VI), the long-pulsed Nd:YAG laser at 1064 nm offers a safer option due to its lower melanin absorption and improved penetration depth.

IPL (Intense Pulsed Light) is a useful adjunctive or first-line option for mild to moderate diffuse redness and comes with a range of cut-off filters to target specific chromophores. However, IPL is not a laser — it emits broadband light and is less precise. For stubborn or treatment-resistant facial redness, combining PDL and Nd:YAG in sequential treatment sessions often yields better results than using either modality alone.

Number of Treatments Required

Most patients notice significant improvement after three to six sessions of PDL or Nd:YAG, spaced four to six weeks apart. Severe or widespread telangiectasia, port wine stains, or deep rosacea may require 4 to 6 sessions. Maintenance treatments, once or twice a year, are often helpful for rosacea, as the underlying inflammatory process continues to produce new vessels over time.

Laser Treatment for Acne Scars

Acne scars are among the most psychologically impactful dermatological conditions — and among the most rewarding to treat with laser.

Acne scarring affects up to 95% of individuals who experience inflammatory acne at some point in their lives. The physical and psychological burden is considerable, with scarring often associated with reduced self-esteem, social anxiety, and a decreased quality of life. Fortunately, the combination of modern laser technology and adjunctive techniques (such as microneedling, subcision, fillers, and chemical reconstruction of skin scars — CROSS technique for ice pick scars) provides significant and lasting improvement for most patients.

Types of Acne Scars

• Ice pick scars: Deep, narrow, V-shaped scars — the most difficult to treat; require CROSS technique or punch excision before laser

• Boxcar scars: Broad, shallow, U-shaped depressions — respond well to ablative fractional laser

• Rolling scars: Wave-like undulations from tethering of dermis to subcutaneous tissue — benefit from subcision followed by fractional laser

• Hypertrophic and keloidal scars: Elevated scars commonly found on the jaw and chest — treated with PDL, intralesional steroids, or a combination of these.

• Post-inflammatory erythema (PIE): Flat red marks resulting from resolved acne — respond to PDL or Nd: YAG

• Post-inflammatory hyperpigmentation (PIH): Brown marks — respond to Q-switched lasers and topical brightening agents.

Best Lasers for Acne Scars

The fractional CO₂ laser is the most effective tool for treating atrophic (depressed) acne scars. By ablating microscopic columns of tissue surrounded by healthy skin, it simultaneously resurfaces the epidermis, stimulates collagen regeneration, and contracts existing scar tissue. Studies report a 25–75% reduction in scar depth after a single optimised treatment; most patients require two to three sessions for optimal results. Downtime lasts seven to ten days.

The fractional Er:YAG laser is preferred for superficial scars, sensitive skin types, or patients requiring shorter recovery times. It is highly precise and has a lower risk of thermal complications than CO₂.

Non-ablative fractional lasers (1550 nm, 1540 nm) provide a gentler alternative, with three to five days of downtime, making them suitable for patients who cannot endure the social downtime of ablative treatments. Typically, four to six sessions are required.

The pulsed dye laser (PDL) and Fractional CO2 laser are the preferred choices for treating hypertrophic and keloidal acne scars, as they decrease scar elevation, erythema, and pliability. It is frequently used in conjunction with intralesional triamcinolone for optimal results.

What to Expect: Acne Scar Treatment Journey

A thorough acne scar treatment plan begins with a detailed clinical assessment, including scar mapping, photography, and a discussion of expectations. Not all scars respond equally, and patients should understand that improvement — not perfection — is a realistic outcome. Professor Madan's approach combines evidence-based laser selection with adjunctive procedures, tailored to each patient's scar morphology, skin type, and tolerance for downtime.

If a patient’s scarring is unlikely to improve with any interventions, Professor Madan will discuss this during the consultation and give his honest feedback.

Acne scars

Laser Treatment for Pigmentation

Pigmentation disorders — from sunspots to melasma — require precise diagnosis and carefully selected laser treatment to achieve safe, lasting results.

Cutaneous pigmentation disorders are among the most common dermatological concerns worldwide. They extend from benign epidermal lesions (solar lentigines, seborrhoeic keratoses, freckles) to more complex and stubborn conditions (melasma, post-inflammatory hyperpigmentation, naevi of Ota). The choice of laser — and whether laser treatment is suitable at all — depends critically on an accurate diagnosis of the type and depth of pigmentation.

Epidermal vs Dermal Pigmentation

Epidermal pigmentation (melanin confined to the basal and suprabasal layers) responds well to shorter-wavelength lasers and IPL. Dermal pigmentation (melanin in dermal macrophages or melanocytes) requires longer wavelengths that penetrate more deeply. Mixed epidermal-dermal pigmentation — as in melasma — is the most difficult to treat and the most susceptible to post-treatment worsening if unsuitable parameters are used.

Lasers for Different Pigmentation Types

• Solar lentigines and freckles: Q-switched Nd:YAG (532 nm), KTP laser, or IPL — usually one to two sessions
• Melasma: Q-switched Nd:YAG 'low-fluence' toning protocol, combined with topical triple therapy (hydroquinone, tretinoin, mild steroid) and strict photoprotection — requires multiple sessions
• Post-inflammatory hyperpigmentation (PIH): Q-switched lasers at conservative settings; topical treatment is usually the first-line approach
• Naevus of Ota: Q-switched Nd:YAG (1064 nm) — multiple sessions, with excellent long-term clearance
• Café-au-lait macules: Q-switched lasers; recurrence is common
• Seborrhoeic keratoses: CO₂ or Er:YAG ablation, or cryotherapy

The Risk of Laser-Induced PIH

Post-inflammatory hyperpigmentation is the most common complication of laser treatment for pigmentation. It arises when laser-induced inflammation triggers melanocyte activation in the epidermis, leading to new brown discolouration — often darker than the original lesion. Risk is highest in Fitzpatrick Types III–VI. Prevention strategies include: thorough pre-treatment photoprotection (SPF 50+ for four to six weeks), test patches before full treatment, conservative parameter selection, and post-treatment topical brightening agents (azelaic acid, kojic acid, vitamin C, niacinamide).

How much does VBeam cost in the UK?

The cost of laser treatment varies depending on the condition to be treated, its extent and severity, and the number of sessions that may be required. Small treatments may start at £200 per session and can extend to £600, depending on the severity. Patients should expect to pay a price premium for being treated by a highly experienced clinician.

Laser Dermatology: Your Questions Answered

Expert answers to the questions patients most commonly ask about laser treatment, answered by Professor Vishal Madan, Consultant Dermatologist.