Which laser type is commonly preferred for treating pigmented lesions?

The Alexandrite laser is commonly preferred for treating pigmented lesions due to its specific characteristics that make it highly effective for this application. It emits light at a wavelength of around 755 nanometers, which is well absorbed by melanin, the pigment found in skin and hair. This strong absorption allows for targeted treatment of pigmented lesions like age spots, freckles, and other abnormal pigmentation without significantly affecting the surrounding tissue.

Additionally, the Alexandrite laser has a relatively short pulse duration, which reduces the risk of thermal damage to the skin while effectively breaking down the melanin. This results in a more comfortable treatment experience for patients and minimizes recovery time. The versatility of the Alexandrite laser also allows it to be effective on various skin types, although its use should still be guided by the patient's specific skin type and the characteristics of the lesion.

In contrast, other lasers listed may not have the same level of absorption for melanin or may be designed for different applications, making the Alexandrite laser a preferred choice for addressing pigmented lesions specifically.