What does "selective photothermolysis" refer to?

"Selective photothermolysis" refers to the principle of using laser energy to selectively destroy targeted cells. This concept leverages the idea that different tissues or cells absorb specific wavelengths of light differently. By tuning the laser to a wavelength that is selectively absorbed by the target cells—in this case, often pigmented or vascular lesions—practitioners can heat and destroy those cells without damaging the surrounding healthy tissue. This precision is crucial in laser treatments, making procedures more effective and reducing recovery time.

The technique is foundational in various applications, including hair removal, tattoo removal, and treatments for vascular lesions. By focusing energy on a particular chromophore (the part of the molecule responsible for color), selective photothermolysis allows for targeted therapy, maximizing efficiency and safety in laser treatments.