Laser treatment for skin lesions (Laser therapy for cutaneous lesions)

What is laser treatment for skin lesions?

Laser treatment uses a focused beam of light to heat and break down a target in the skin. Different lasers are tuned to different targets: 'vascular' lasers aim at the red of small blood vessels (thread veins, some birthmarks), and 'pigment' lasers aim at brown colour (some age spots and flat brown marks).

It is used for things like port wine stains and other birthmarks, facial thread veins, rosacea redness, and some harmless brown patches. It is a way to fade or remove a mark, not a single cure-all, and most marks need a course of sessions spaced weeks apart.

Laser is not the right tool for every skin lesion. A mark that might be skin cancer, or any spot that is changing, should be examined and often sampled (a biopsy) first, not lasered away. Lasering an undiagnosed lesion can remove the chance to diagnose it properly.

Results vary a lot between people, lesions and skin tones. Some marks fade well, some only partly, and some come back over time. A responsible clinician sets honest expectations before you start.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Laser versus other ways to deal with a skin lesion

Any lesion that could be skin cancer should be assessed by a dermatologist and is usually removed and tested, not lasered.

Preparing for your procedure

• Have the lesion examined by a dermatologist or appropriately trained clinician first, so anything suspicious is diagnosed (often by biopsy) before any laser.
• Tell them your skin tone and whether you tan easily or burn; this affects which laser and settings are safe for you.
• Avoid sun, sunbeds and fake tan for several weeks beforehand, as a tan raises the risk of burns and colour change.
• Mention any history of cold sores (laser near the lips can trigger one), keloid scarring, or light-sensitivity.
• List all medicines and supplements, including anything that thins the blood or makes skin sensitive to light (such as some antibiotics or roaccutane recently taken).
• Ask for a test patch if you have a darker skin tone or are unsure how your skin will react.
• Discuss realistic results, how many sessions are likely, and the chance the mark only partly fades or returns.
• Plan for possible redness, swelling or bruising afterwards if you have an event coming up.

What happens

You wear protective goggles, and the clinician may cool the skin or apply numbing cream first. The laser is passed over the lesion in pulses; many people describe each pulse as a flick of a warm elastic band. A small area takes only minutes.

With a vascular laser the skin often goes red and may bruise to a dark purple straight away. With a pigment laser the treated spots may turn white ('frost') briefly, then look darker before flaking off over a week or two. The clinician then cools the area and gives aftercare advice. Most marks need a course of sessions, usually several weeks apart, to build up the effect.

Is this procedure right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

Comfort, sedation or contrast choices

If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.

The biggest risks are colour change in the skin and, rarely, scarring; both are more likely in darker skin tones, in tanned skin, and with stronger settings. The most serious risk is non-physical: if a lesion that could be cancer is lasered instead of examined and tested, the diagnosis can be missed. Ask how the clinician has confirmed your lesion is safe to laser, and how they will protect your skin tone.

Published figures to discuss

Reliable, comparable rates of side effects are hard to quote because they depend heavily on the laser, the settings, the lesion and especially the skin tone, and because much of the published data comes from selected case series rather than large unbiased studies. We have therefore described risks in plain words rather than giving percentages that could mislead.

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is no operation to recover from, but the treated skin reacts: expect some redness, sometimes bruising or crusting, and a few days to a couple of weeks before each session settles. The full effect is judged over the whole course, not after one visit.

• Redness and mild swelling for a few days after each session
• Bruising for one to two weeks with some vascular treatments
• Pigment spots turning darker, then flaking or lightly crusting before fading
• The mark looking worse or unchanged at first, then gradually improving
• Needing more than one session to see a real difference

Aftercare

• Cool the area and use a gentle, fragrance-free moisturiser as advised.
• Use a high-factor sunscreen (SPF 30 or above) on the area and avoid sun, sunbeds and fake tan, especially while it heals and between sessions.
• Do not pick or scratch any crusts or flakes; let them come away on their own.
• Avoid harsh skincare (acids, scrubs, retinoids) on the area until it has settled.
• Use any prescribed cream (for example antiseptic) if blistering or crusting occurs.
• Avoid very hot baths, saunas and heavy exercise for a day or two if the area is sore.
• Keep to the spacing the clinician advises between sessions.
• Report spreading redness, increasing pain or signs of infection.

• High-factor sunscreen (SPF 30+) ready
• Gentle fragrance-free moisturiser
• Any prescribed antiseptic or healing cream collected
• Sun avoidance / hat planned for the treated area
• Diary of session dates and spacing
• Clinic contact number saved in case of problems

Scars and how they heal

Most people do not scar, but the skin does react. With vascular lasers expect redness and often bruising (purpura) that fades over one to two weeks; with pigment lasers expect brief whitening, then darkening and light crusting that flakes off. Temporary colour change — the skin going darker or paler than before — is the main concern and is more likely in darker or tanned skin; it usually settles over weeks to months but can occasionally last longer. True scarring is uncommon and more likely with stronger settings or in people prone to thickened scars.

⚠ Get urgent help if…

• Spreading redness, heat, swelling or pus (possible infection)
• Increasing pain rather than settling discomfort
• Blistering or raw skin that is not healing
• A cold sore developing around treated lips
• Any treated mark that bleeds, grows, changes shape or colour, or comes back — have it checked, not re-lasered
• A new or changing mole or spot anywhere on the skin

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your specialist gives you.

Results & realistic expectations

A good result is the mark fading or clearing while the surrounding skin stays healthy and its normal colour. This is judged over the whole course, often weeks after the final session, not on the day. Many marks improve a lot; some only partly fade, and some can return.

Laser changes how a mark looks. It does not diagnose anything. A faded appearance is not proof a lesion was harmless — that comes from proper examination and, where needed, a biopsy beforehand.

How long results last depends on the lesion. Some thread veins and pigment marks stay faded for years; sun-related brown patches can come back with more sun exposure, and some vascular birthmarks (such as port wine stains) tend to gradually re-darken and need maintenance sessions. Sun protection helps results last.

Related tests, treatments or support

Different lasers are sometimes used for different parts of a mixed lesion, and laser is sometimes used alongside other skin treatments. Any lesion that needs a diagnosis should be biopsied or removed for testing first, separately from cosmetic laser work.

Follow-up & long-term care

You are usually reviewed between sessions to check healing and decide on the next treatment and settings. The clinician should re-examine the lesion as you go and stop or change course if the skin is not reacting well or the diagnosis is in doubt.

• Daily sun protection on treated areas to hold results and reduce colour change
• Top-up sessions for marks that tend to return, such as some vascular birthmarks
• Regular self-checks of moles and marks, and review of anything that changes

Repeat, follow-on and what comes next

• Most marks need a course of sessions, not a single treatment.
• Some lesions, such as certain vascular birthmarks and sun-related pigment, partly return and need maintenance.
• If a mark changes or recurs, the right step is re-examination (and sometimes biopsy), not simply lasering it again.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

• A clinician examines the lesion first and confirms laser is appropriate, referring anything suspicious for testing.
• Clear written aftercare: sun protection, moisturising, not picking crusts, and signs of infection.
• A named contact for problems and a plan for review between sessions.
• Honest review of progress, with willingness to stop or change course if the skin reacts badly.
• Advice on long-term sun protection and self-checking marks.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

• Whether the lesion has been properly examined and diagnosed first (a separate dermatology assessment or biopsy may be needed)
• The type and size of the lesion and how many areas are treated
• The number of sessions needed, which is often more than one
• The type of laser used and the experience of the operator
• Whether numbing cream, local anaesthetic or a test patch is included
• Review appointments and any top-up sessions
• Whether the lesion is medical (possibly NHS-funded) or cosmetic

• Whether a dermatology assessment or biopsy is needed first, and if that is included
• The likely number of sessions and the cost per session
• Who carries out the treatment and their training
• Whether numbing, a test patch and aftercare products are included
• What review appointments are included
• The cancellation policy
• What happens, and what it costs, if the mark only partly responds or comes back

On the NHS? Some medical lesions such as port wine stains may be treated on the NHS, while treatment of purely cosmetic marks is usually private; access and criteria vary by area.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Consent traps and marketing red flags

These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.

Choosing a specialist safely

• Check the specialist is on the GMC Specialist Register for this area.
• Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
• You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
• Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
• You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Take this to your consultation. A good specialist will welcome every one of these.

• Have you examined this lesion and are you sure it is safe to laser rather than test?
• Which laser will you use and why is it right for my skin tone?
• How many sessions am I likely to need, and what result is realistic?
• What is the chance my skin colour changes, and how will you reduce it?
• Will you do a test patch first?
• What should I do if the mark comes back, bleeds or changes?
• Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
• Will you be the specialist who carries out my procedure, and who looks after me afterwards?
• What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
• What does a realistic result look like — and what can this procedure not achieve?
• What are my options, including waiting, doing nothing for now, or choosing a different approach?
• Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
• What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Find a verified specialist for laser treatment for skin lesions

Every consultant is GMC-checked and independently reviewed. Search by postcode and distance, or switch to a map. Ordered by rating, relevance and recency — never by who pays.

How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: British Association of Dermatologists — patient information leaflets Northern Care Alliance NHS — Laser treatment of vascular skin lesions (patient leaflet) Leeds Teaching Hospitals NHS Trust — Laser treatment (patient information) Laser complications — StatPearls (NCBI Bookshelf) Lasers for vascular lesions: standard guidelines of care — PubMed

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.