Some laser systems try to optimize the wavelength to 595 nm for better treatment of port-wine stains that are refractory to treatment by 585 nm. There does not appear to by any statistical advantage for the 595 nm wavelength. Improvement in pulse duration is probably much more important. There are many other applications of this wavelength like Poikiloderma of Civatte in the header picture above, as a long pulse or the MaQX of the StarWalker.
The bottom line is when it comes down to color, we got you covered at Landmark! Hemangiomas and telangiectasias as well as the sun damaged brown pigments can be treated safely. We have the safest wavelengths of lasers to treat various colors in the shortest time possible.