The ideal wavelength is 577nm, or yellow light and until the North American debut in 2014, a pure yellow laser of sufficient power for skin rejuvenation was not available. That is until the debut of the QuadroStar ProYellow laser, the industry’s first 577nm pure yellow laser for skin rejuvenation.
The Pro Yellow wavelength (577nm) provides the best absorption when treating blood vessels. Compared to the standard green wavelength (532nm), the yellow wavelength is able to produce 40% higher absorption in blood. This translates to less required power during treatment, which in turn provides a number of significant advantages.
Apart from being at the correct wavelength, these lasers utilize proper pulse durations that ensure proper absorption by red ‘targets’ in the skin. Long pulse lasers are needed for hemoglobin absorption – something that short pulse lasers are not able to achieve. There are many gimmicky Gold-Toning or Yellow-Light treatments – these are either Q-switched/PICO pulse durations or non-focused beams of light that are completely unsuitable for effective redness treatments. In other words, apart from having the correct yellow wavelength, the proper pulse duration is needed for it to work well.