Which color of tattoo ink is specifically treated by the Ruby 694 laser?

The Ruby 694 laser is particularly effective in treating green tattoo ink due to its specific wavelength of light. This laser operates at a wavelength of approximately 694 nanometers, which is well-absorbed by the pigments that create the color green in tattoo inks. The high absorption rate enables the Ruby laser to break down the pigment particles more efficiently, leading to better results during the tattoo removal process.

Other colors of ink, such as blue, dark, and light inks, have different absorption characteristics and may require different types of lasers for optimal removal. For instance, blue inks are often treated effectively with lasers that emit at different wavelengths, such as the Q-switched Nd:YAG laser, while dark colors can typically be addressed by a variety of lasers depending on the specific hues used. Light colors, on the other hand, can pose challenges for removal because they absorb light differently than darker pigments. This specificity highlights why the Ruby laser is best suited for green tattoo inks rather than other colors.