Acne Scar Laser Treatment in London 2026. Sessions, Cost and Honest Expectations
Last updated September 2026. Written for The Wellness, Marylebone. Every clinical figure below carries its source.
Fractional laser is a well-established treatment for atrophic acne scarring, and it improves scars by grades rather than removing them. Most protocols need three to six sessions built over months, and London pricing runs from about £400 a session for non-ablative fractional up to £1,500 or more a session for fractional carbon dioxide on a full face. The most useful thing anyone can tell you before you spend that is which type of scar you actually have, because icepick, boxcar and rolling scars respond differently and a single approach across all three is how laser disappoints.
Take the free laser suitability check and a doctor will tell you within one working day what your scarring is likely to need.
The expectation worth setting first
Acne scarring is the treatment where the gap between what is advertised and what is achievable is widest. The photographs that sell it are usually the best result a clinic has ever had, taken in flattering light, and the substantiation burden for those images under the advertising rules is heavier than most clinics can meet. We publish none at all for that reason.
Here is the honest frame. Fractional laser triggers a controlled wound-healing response that remodels the collagen around a scar, so the edges soften, the depth reduces and the surface catches the light more evenly. Over a course, skin that read as pitted starts to read as uneven, and skin that read as uneven starts to read as textured. That is a real and worthwhile change, and people are genuinely pleased with it. What it is not is a return to the skin you had before the acne. Anyone promising that is selling something the literature does not support.
What the evidence shows
Liu and colleagues compared fractional carbon dioxide against fractional erbium in a 2024 meta analysis in the Journal of Cosmetic Dermatology and found carbon dioxide modestly more effective for atrophic acne scarring, with an odds ratio of 1.81 and a 95 percent confidence interval of 1.08 to 3.01, at the cost of longer downtime. Adverse events across the pooled trials, chiefly hyperpigmentation, redness and swelling, were generally controllable rather than severe.
That single result carries most of what you need. Carbon dioxide is somewhat better. It is not dramatically better, the confidence interval is wide, and it asks for more recovery. So the choice between the two is a real choice rather than an obvious one, and it turns on your skin type and your calendar rather than on which platform a clinic happens to own.
The same body of work is clear that response varies by scar type and by skin tone, and that results are graded improvement rather than resolution.
The three scar types, and why the distinction matters
Icepick scars are narrow and deep, like a puncture. They are the least responsive to fractional laser alone, because the laser has to remodel a lot of depth through a very small opening. They often do better with a punch technique or with a combination approach.
Boxcar scars are wider with sharp, defined edges. Fractional laser softens the edges well, and deeper boxcar scars sometimes need subcision or a filler alongside.
Rolling scars are shallow, broad depressions caused by tethering below the surface. These often respond best of the three to fractional resurfacing, and subcision to release the tethering can add a great deal.
Most people have a mixture, which is why the useful first step is a doctor mapping which types you have and in what proportion, and then writing a protocol around that. A clinic that quotes you a price for full-face fractional laser without having done that is quoting for a procedure, not for a plan.
Ask what your scarring is likely to need, or email team@thewellnesslondon.com.
How many sessions, and over how long
Three to six sessions is the honest range for atrophic scarring, spaced roughly four to eight weeks apart depending on depth and on how your skin recovers. That means a course runs across four to nine months, and the final result is not visible until months after the last session, because collagen remodelling continues long after the redness has gone.
Two practical consequences. First, this is not a treatment to start six weeks before a wedding. Second, judging the result after one session is judging it far too early, and any clinic that offers you a single session as a fix for established scarring is not describing the treatment accurately.
Active acne is treated first. Resurfacing skin that is still breaking out produces new scars alongside the improvement in the old ones.
What it costs
Across the London market, non-ablative fractional treatment for scarring runs roughly £400 to £1,200 a session, and fractional carbon dioxide roughly £800 to £1,500 a session, rising to around £1,750 for a half face and £2,950 for a full face at the top of the range. The Skin to Love Clinic starts Fraxel Dual for scars and stretch marks from £250. sk:n lists CO2RE at £925 for a half face. Those are session prices, so multiply by three to six before comparing anything to a course price.
At The Wellness, scar programmes start from £1,250 for one area in a single session, £3,250 for the full face across three sessions with a doctor review, and £5,950 for a full course of up to six sessions with a combination protocol across scar types and a review at every stage. The consultation, £250 on video or £350 in person, is credited in full against whichever you go on to have, and the price is confirmed after the doctor has mapped your scarring rather than before.
Downtime and risk
Fractional carbon dioxide means several days of redness, swelling for the first two, and a sandpaper or crusted texture through the first week, with redness settling over subsequent weeks. Fractional erbium is somewhat lighter. Non-ablative fractional is lighter again, often a day or two of redness.
The risks that matter are post-inflammatory hyperpigmentation, which is more likely in darker skin and is the main reason settings are conservative there, prolonged redness, and rarely infection or new scarring. Cold sores can be provoked, so a history of them means prophylaxis. Sun exposure before and after treatment materially raises the pigment risk, which is why photoprotection is written into every plan rather than mentioned in passing.
Frequently asked questions
How many laser sessions do acne scars need? Three to six is the honest range, spaced four to eight weeks apart, so a course runs across four to nine months. Response varies by scar type and skin tone, and the final result is not visible until months after the last session because collagen remodelling continues.
Will laser get rid of my acne scars completely? No. Fractional laser improves atrophic scarring by grades and does not return the skin to how it was before the acne. That improvement is real and most people are pleased with it, but complete removal is not what the evidence supports.
Is CO2 laser better than erbium for acne scars? Modestly. Liu and colleagues found fractional carbon dioxide more effective than fractional erbium in a 2024 meta analysis, with an odds ratio of 1.81 and a 95 percent confidence interval of 1.08 to 3.01, at the cost of longer downtime. The choice turns on your skin type and how much recovery you can take.
Can I have laser for acne scars on darker skin? Yes, with conservative settings and a platform chosen for your skin type, because the risk of post-inflammatory hyperpigmentation is higher. Some platforms are ruled out. Your skin type is recorded at the assessment and drives the choice.
Do I need to clear my acne first? Yes. Resurfacing skin that is still breaking out produces new scarring alongside the improvement in the old, so active acne is treated before scar work begins.
What about microneedling or subcision instead? Both have a place, and for some scar types they are the better answer or belong alongside laser. Rolling scars caused by tethering often need subcision to release it. That is exactly the sort of judgement an examination produces and a price list cannot.
Start with what kind of scarring you have
Take the free laser suitability check and a doctor will read it and reply within one working day. Or book a consultation with a doctor at The Wellness in Marylebone, minutes from Baker Street, £250 on video or £350 in person, credited in full against whatever you go on to have.
Email team@thewellnesslondon.com or call +44 20 3951 3429.
This article is for information and does not constitute medical advice or a diagnosis. Laser treatment carries risks including pigment change, prolonged redness and, rarely, scarring or infection. Every laser treatment at The Wellness follows an assessment by a GMC registered doctor, who discusses the treatment with you and takes your consent personally. Individual results vary. Please speak to a doctor before any cosmetic treatment.