This laser allows treatment of pigmented spots, especially melasma (pregnancy mask).

How does it work?

During the "flash" the energy released by the laser is absorbed by the melanin present in the pigmented lesion, triggering a cell renewal without pigment, and ultimately its disappearance.

Results are long-lasting due to deep skin cells renewal. However it is imperative to protect your face from the sun with a maximum index to avoid the appearance of new spots later.

What is the session like?

The "flash" is slightly uncomfortable: an anesthetic cream can be applied before the session if need be (large surfaces).

Local redness appears after the session (normally lasts a few hours). Makeup is authorized 5 hours after treatment, so in case some redness remains, this can easily be masked by a light make-up the next day.

How many sessions?

For lasting results, 4-6 sessions (1 month apart) are required. These treatments are never undertaken in Summer (sun exposure banned during the treatment).


Fractional non ablative resurfacing lasers provide great results with a variety of skin issues, such as wrinkles, stretch marks, acne or surgical scars, and sun-related/hormonal pigmented lesions (melasma).

A session lasts approximately 30 minutes, depending on the purpose of the treatment.

Make-up must be perfectly removed prior to treatment, to avoid pigment transfer to the skin, and will only be authorised 8 hours after session.

Whilst you are made comfortable on a medical bed, the laser technician will place your eye protections. There is no light passing through a fractional laser, but eye goggles are nonetheless a necessity with lasers of this category and power.

After a few tests to ensure your skin’s good response to the treatment and your comfort, the laser technician will start the session, adapting as needed power, pulse count, overlap and repetitions.

There is no point in having a local anesthesia prior to treatment, since the effect of the treatment takes place below the skin, not at its surface, and lasts a few days, so anesthesia is of no use. Besides, the passage of the laser is not painful. What you do feel during each flash is like a small needle prick or tingling. Each laser’s impulsion is brief but intense, inducing local thermo-coagulation. It’s that thermo-coagulation which induces warmth and redness, sometimes a short-term puffiness. On the surface, your skin is not burned nor broken, it’s inside that the real work is happening.

Micro-swelling and/or redness is expected immediately post-treatment. It is proof the thermo-coagulation process is happening.

The laser technician will enquire throughout the session about your well-being, and will give you a « cold-pack » to ice the area, which helps to subside much of the swelling and provides immediate comfort

Residual redness or marks may remain for 1-3 days (or weeks when treating body stretch marks or scars), which will respond well to cold, calming creams for instance, and may be hidden with make-up the following day.

We prefer to wait for any redness or marks to vanish completely before treating same area again.

The number of sessions actually depends on skin facility to regenerate and on how old the lesion is. Indeed, dramatic results are obtained with thin and recent lesions whereas ancient, large or deep lesions are much more difficult to erase. Nevertheless, each session brings visible reduction of lesions and smoothing of the skin’s surface.

Recommendations / Contraindications

Lux 1540 treatments are very safe and effective, but only when in the hands of medical professionals specifically trained for this technique.

Avoid sun exposure and self tanning products 3 weeks before and after procedure to prevent any side effects especially scarring or pigmentation. Bleaching creams and products with active ingredients (such as benzoyl peroxide, retinol, salicylic acid) should be stopped 2 weeks prior treatment. The use of Accutane 6 months or less, and Pregnancy is a contradiction as well.

Normally, "Microswelling" subsides after 24 hours. Icing the area after can help to subside much of the swelling. Make sure to avoid any exercise where you will be sweating, hot showers and public pools to avoid further skin irritation. As soon as swelling goes down, you can cover any redness using a mineral powder. Always wear an SPF 50 minimum to protect the skin, after any laser treatment.

Usually the treatment produces about a week of mild downtime consisting initially of swelling and redness for a few days and then some rough "sandpapery" feeling for a few days as the time laser columns heal.

As a precaution, laser treatments are not made during pregnancy.

Skin types I-IV react better to fractional lasers than darker or black skins, for which increased depigmentation risks exist

Laser treatments are not adquate in the presence of potentially cancerous lesions.


Each session provides visible improvement, with reduction of lesions and progressive skin resurfacing. The best results are seen a few weeks later.  Thermo-coagulation induces restructuring of the skin cells without the lesion (wrinkle, pigment, stretch or scar marks). Fibroblasts are stimulated, collagen synthesis inceases and is thus hydrated, vascular microcirculation improves. Overall, the area treated is more hydrated, more supple

We recommend sessions to be at least a month apart. However it is perfectly acceptable to space them further apart, without losing the benefit of previous session (no difference in outcome).

When a scar or melasma has been erased thanks to a laser treatment, this result is final, as cells with the issue have been replaced by new ones without the lesion. Wrinkles however may appear after a few years, or new stretch marks in case of another pregnancy for instance, which can all be treated if and when they appear with another round of fractional laser treatments.

Before / After

melasma treatment (4 sessions)