CO2 laser resurfacing suits a wide range of people, but the right candidate is defined less by a single feature and more by the right combination of concern, skin and expectations. The following profiles describe the patients who tend to benefit most.

The first is anyone troubled by acne scarring who has tried gentler routes without the result they hoped for. If your scarring sits in the texture of the skin rather than only in its colour, laser resurfacing reaches a depth that creams and most surface treatments cannot. The second is people with surgical, traumatic or accident scars who want to improve how a scar looks or feels, whether it is recent and part of a longer plan or long-standing and never properly addressed.

A third group is patients showing the signs of sun damage and ageing, including fine lines, wrinkles, rough or crepey texture, enlarged pores and uneven pigment. If your skin has lost its smoothness and clarity and you want a genuine reset rather than a temporary glow, resurfacing is one of the most effective single treatments available. A fourth group is anyone who has had milder treatments and feels they have reached the limit of what those can offer, and who is ready for a step up in results and is willing to accept a recovery period in exchange.

Across all of these, the strongest candidates share two things. They are in good general health with no condition that impairs wound healing, and they hold realistic expectations, understanding that the result builds over months and that scarring is improved rather than erased. Skin tone is also part of the conversation. Fractional CO2 laser can be performed across a broad range of skin tones, but deeper and more easily pigmented skin carries a higher chance of temporary darkening after treatment, so the settings, preparation and aftercare are adjusted accordingly and discussed fully at consultation.

Some circumstances mean treatment should be delayed or avoided. CO2 laser is generally not recommended if you have taken the acne medication isotretinoin, often known by the brand name Roaccutane or Accutane, within roughly the previous six to twelve months, as the skin needs time to recover its normal healing response. It is also not advised for people with a history of keloid scarring, the type of raised scar that grows beyond the original wound, or for those with conditions that significantly impair wound healing. Active skin infection or inflammation in the area, certain ongoing skin conditions, and pregnancy or breastfeeding are also reasons to postpone. A tendency to cold sores does not rule treatment out but may mean Dr Karwal recommends preventative antiviral medication beforehand. The purpose of your consultation is to identify any of these factors and keep you safe, which is why a proper medical assessment always comes first.

Your treatment begins with a consultation rather than a laser. Dr Karwal assesses your skin and your concern, reviews your medical history, explains what is realistically achievable and designs a plan around you, including how many sessions are likely to be needed. This is also when the AcuPulse settings are tailored to your skin type and the depth of treatment required.

On the day, a numbing cream is applied to the area beforehand so that you are comfortable throughout. A typical session takes in the region of twenty to thirty minutes of active treatment depending on the size of the area, with extra time set aside for the numbing cream to take effect. During the treatment you will feel a warm sensation as the laser passes over the skin, along with the cool air the device uses to keep you comfortable. Most people describe it as very manageable. Afterwards your skin will feel hot and tight, much like a strong sunburn, which is entirely expected and settles over the days that follow.

Karwal Aesthetics is a doctor-led clinic in the heart of Mayfair, London, and laser resurfacing is treatment where being in experienced medical hands genuinely matters. Dr Karwal is a GMC-registered doctor whose background in emergency medicine means he is deeply familiar with skin, wounds and healing, and his approach is conservative and considered rather than rushed. Consultations are unhurried, expectations are set honestly, and your treatment plan is built around your skin and your goals rather than a standard template. Combined with the precision and range of the Lumenis AcuPulse, that care is what allows the treatment to be both safe and effective for the concerns that matter most to you.

It depends entirely on your concern. Sun damage, lines and general texture can show a marked improvement after a single session, while deeper acne scarring and established surgical or traumatic scars usually respond best to a planned course of treatments spaced several weeks apart. Dr Karwal will give you a clear, individual answer at your consultation once he has assessed your skin.

A numbing cream is applied beforehand so the treatment itself is comfortable for most people, who describe a sensation of warmth rather than pain. Afterwards the skin feels hot and tight, similar to a strong sunburn, which is normal and settles over the following days.

Most people experience around five to seven days of visible recovery, during which the skin is red, then bronzed, and goes through a flaking and peeling phase as it renews. Many plan their treatment around a quieter week. A pink tone can linger for a few weeks afterward and is easily covered with makeup once your skin has fully closed and you have been cleared to use it. Swelling, especially around the eyes, tends to peak around day two or three.

You will notice fresher, smoother skin once the peeling settles in the first couple of weeks, but the most significant improvement is gradual. Because the treatment works by stimulating new collagen, texture, fine lines and scarring continue to improve over the following two to three months and beyond. The final result is not what you see at week two, but what emerges over time.

Fractional CO2 laser significantly improves the appearance and often the texture of scars, but it improves rather than erases them. The degree of improvement depends on the type, depth, age and location of the scar. Dr Karwal will always be honest with you about what is realistically achievable for your particular scarring before you commit to treatment.

Fractional CO2 laser can be performed across a broad range of skin tones, but deeper and more easily pigmented skin has a higher chance of temporary darkening after treatment. This is managed through tailored settings, appropriate preparation and strict sun protection, all of which are discussed in detail at your consultation. A patch test or test area may form part of the plan.

The AcuPulse is made by Lumenis, a pioneer of CO2 laser technology, and combines deep and superficial fractional treatment in one device. Its SuperPulse technology reaches deeply into the skin while leaving less excess heat behind, which supports comfort, safety and a more predictable recovery. Crucially, its range of settings lets Dr Karwal tailor the depth and intensity precisely to your skin and your concern.

Not immediately. CO2 laser is generally avoided for around six to twelve months after a course of isotretinoin, often known as Roaccutane or Accutane, because the skin needs time to restore its normal healing response. Let Dr Karwal know your full history at consultation so the right timing can be planned safely.

The face is the most common area, particularly the cheeks, around the eyes and around the mouth, but the laser can also be used on the neck, chest and hands, and on scars elsewhere on the body. Dr Karwal will confirm what is appropriate for your skin and your concern during your assessment.