How Do Medical Lasers Work?

Class IV medical lasers are devices specifically designed to emit various wavelengths of light (visible and non-visible) to treat many different medical conditions. They are the highest-powered type of laser used in medicine and have the potential to cause damage to the skin and eyes if used incorrectly. In the state of California, only licensed physicians, physician assistants, nurse practitioners or registered nurses may legally operate Class IV medical lasers.

Each laser is designed to emit a single wavelength of light that generates powerful thermal energy for an intended target (i.e. hair, blood vessels, pigment/melanin). Because of this, not all lasers can treat the same condition. Each one has a very specific and specialized purpose. However, there are several lasers that can treat a wide range of skin problems because they use multiple wavelengths of light.

As an example, hemoglobin is a molecule that attaches to and carries oxygen in red blood cells. Lasers that target hemoglobin can be used to treat skin problems that involve unwanted blood vessels like rosacea, red acne scars, angiomas or spider veins. Other lasers are specific for pigment or melanin. These devices are used to treat tattoos, unwanted hair (pigment lines the follicle), sun spots, age spots and other skin pigment problems. Lastly, some devices target water. These lasers vaporize skin and can be used to resurface and regenerate large or small areas of skin, depending on the desired effect or the outcome that’s wanted. Acne scars, wrinkles and texture issues (pores) are treated with this type of laser.

At Celibre Medical, we use a variety of different lasers. Some of the lasers we use include: the Lumenis LightSheer, the Sciton Profile, the Cynosure V-Star, the Candela V-Beam, the Quantel Medical Aramis, the Laserscope Lyra, the Palomar Q-Yag V, and the Hoya Conbio Medlite C6 to name a few. If you’d like to learn more about our laser equipment and the skin conditions they treat, please visit


Lumenis Lightsheer laser hair removal laserSciton Profile laser hair removal laser

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