Le laser Fraxel pour réduire les taches, cicatrices et vergetures

Fraxel laser for skin free of scars, spots and stretch marks.

Exposure to sun and pollution, hormonal shifts and unsuitable skincare all challenge the skin. After childbirth or a sunny holiday, hyperpigmentation spots, stretch marks or scars may develop. To address this, the laser Fraxel was developed.

Summary
Published June 9, 2025, updated on June 9, 2025, by Lilia, Scientific Editor — 6 min read

What is the Fraxel laser?

During a Fraxel laser session, microscopic laser columns penetrate the epidermis. This technique delivers microbeams of light into the skin, creating thousands of invisible microlesions. These microperforations stimulate tissue repair and the formation of new, smoother, more even skin while preserving surrounding healthy areas, which accelerates healing. The Fraxel laser targets excess melanin. By creating microlesions, it produces cellular debris, including melanin, which is removed over time. The procedure promotes clearance of damaged or aged epidermal cells, stimulates cell regeneration and the skin’s natural healing process. The Fraxel laser can be used on the face, neck, chest, arms and hands. It addresses a range of concerns to reveal healthy, even, smooth skin.

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How is a Fraxel laser session performed?

The Fraxel laser uses two specific wavelengths depending on the issue: the 1,555 nm for deeper conditions such as scarring and the 1,927 nm for superficial imperfections such as pigmented spots.

  • The 1,555 nm Fraxel laser is effective against deep scars and wrinkles.

    The 1,555 nm laser penetrates the dermis to about 1.4 mm beneath the skin surface, targeting deeper issues such as acne scars, stretch marks, deep wrinkles and improves skin texture by stimulating the production of collagen and elastin.

    A study of five female patients assessed the efficacy of the Fraxel laser on spots and scars. A topical anaesthetic containing 23% xylocaine (lidocaine) and 3% tetracaine was applied one hour before each session to reduce discomfort. After anaesthesia, a blue dye specific to the Fraxel laser was applied to ensure precise activation on treated skin. A 5% xylocaine ointment was then applied to reinforce the anaesthetic effect.

    In one patient treated twice, fine lines were reduced and melanocyte counts decreased two weeks after the second session. Two more patients underwent three to five sessions and displayed a significant reduction in undesired melanocytic pigmentation. The second of these patients showed reduced periorbital lines. The fourth patient showed a more even skin tone, firmer skin, and fewer lines. The final patient, with hypertrophic, hyperpigmented burns on the thigh, saw scar flattening and decreased pigmentation.

  • The 1927 nm Fraxel for hyperpigmentation spots.

    The Fraxel 1927 nm laser is designed to address pigmentation irregularities, brown spots, and dull skin after high UV exposure. It also unifies skin texture, targeting the epidermis at depths of 0.5–1 mm.

    A study was conducted on 27 patients aged 29 to 74 years, all Fitzpatrick phototypes I to IV, who received two 1,927 nm nonablative laser treatments in May and June 2022. Follow-up was achieved for 96% of patients at one month and for 89% at three months. No serious adverse events were reported. The results show a significant dyspigmentation improvement at one month after treatment, with a marked reduction in spots, UV spots, and brown spots. At three months brown spots remained reduced, with a pigmentation improvement of 9.9% on the left side of the face and 7.5% on the right side.

The two wavelengths may be combined when treatment of both the superficial and deep skin layers is required. Three to five sessions are necessary depending on the area treated. After each session, apply a broad-spectrum sunscreen. Direct sun exposure is not advised for three months following treatment.

What are the side effects and contraindications of the Fraxel laser?

The side effects of Fraxel laser treatment vary according to the treated area and the wavelength used. Areas such as the neck, chest or hands have a slower healing rate than the face and are more prone to side effects.

With Fraxel 1 150 nm, redness may appear after treatment. It may be accompanied by swelling or dryness. The skin may feel tight. These effects can last one to three days. They resolve within two to seven days. Fraxel 927 nm causes mild redness lasting one to two days. Initial results are visible after the first session. The effect is optimal after six months. Benefits can last up to four years, depending on lifestyle and post-treatment care.

This treatment is contraindicated in pregnant or breastfeeding womenand in individuals who have received isotretinoin treatment within the previous six months. Photosensitising treatments are to be avoided, including certain anticancer agents, antidepressants, and antiepileptic drugs.

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