{"id":11071,"date":"2026-02-19T13:35:30","date_gmt":"2026-02-19T12:35:30","guid":{"rendered":"https:\/\/www.ctrlz.com\/fr\/non-classifiee\/laser-alexandrite-the-benchmark-for-light-skinned-hair-removal\/"},"modified":"2026-02-20T13:29:23","modified_gmt":"2026-02-20T12:29:23","slug":"laser-alexandrite-the-benchmark-for-light-skinned-hair-removal","status":"publish","type":"post","link":"https:\/\/www.ctrlz.com\/fr\/en\/hair-removal\/laser-alexandrite-the-benchmark-for-light-skinned-hair-removal\/","title":{"rendered":"Laser Alexandrite: the benchmark for light-skinned hair removal"},"content":{"rendered":"

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The Alexandrite laser is considered the world reference in laser hair removal<\/strong> for fair skin. With its 755 nm wavelength, perfectly absorbed by melanin, it delivers fast, long-lasting results. But is it right for your skin? How does it compare with other technologies? CtrlZ tells you all about this must-have laser. <\/p>\n

What is the Alexandrite laser?<\/h2>\n

The Alexandrite laser is a class IV laser<\/strong> used in aesthetic medicine, mainly for permanent hair removal. Its name comes from the alexandrite crystal that forms its active medium. <\/p>\n

This laser emits a light beam at a wavelength of 755 nm<\/strong>, in the visible light spectrum (violet\/pink beam). This wavelength has a particularly high melanin absorption coefficient, making it the most effective laser for targeting the pigment in hair. <\/p>\n

How does it work?<\/h3>\n

The principle is that of selective photothermolysis<\/strong>:<\/p>\n

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  1. The laser beam passes through the skin without damaging it<\/li>\n
  2. Light is absorbed by the melanin in the hair<\/li>\n
  3. Light energy converts to heat<\/li>\n
  4. This heat destroys the hair bulb and germ cells (bulge).<\/li>\n
  5. The hair can no longer grow back<\/li>\n<\/ol>\n
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    \ud83d\udca1 Why 755 nm?<\/h4>\n

    The 755 nm wavelength corresponds to the absorption peak of melanin. This is what makes the Alexandrite laser so effective: it precisely targets the hair pigment while preserving surrounding tissue. No other laser can match this selectivity on fair skin. <\/p>\n<\/p><\/div>\n

    Who is the Alexandrite laser designed for?<\/h2>\n

    Ideal candidates<\/h3>\n

    The Alexandrite laser is particularly recommended for :<\/p>\n