A Comparative Study of Dermatologic Lasers with Different Wavelength: Is It Truly Appropriate?

Since T. H. Maiman commercialized the pulsed ruby laser in 1960 [1], various lasers have been developed and utilized in clinical practice.In particular, lasers with a wide range of wavelengths are now available for identical clinical indication.For instance, laser hair removal can be performed using a 755 nm long-pulsed alexandrite laser, an 810 nm diode laser, or a 1,064 nm long-pulsed Nd:YAG laser.Consequently, questions have arisen regarding which wavelength is the most effective or associated with fewer side effects for identical clinical indication, leading to the publication of numerous comparative studies and review articles.However, there appear to be inherent limitations in these comparative and review papers.There are six key laser parameters: wavelength, pulse duration, spot size, fluence, frequency, and surface cooling (Table 1) [2].Among these, wavelength, pulse duration, A Comparative Study of Dermatologic Lasers with Different Wavelength: Is It Truly Appropriate?