The tattoos removal has become an issue upon spread of the tattooing practice worldwide and
hindsight regrets. Lasers are typically used for the purpose, though some colours such as green are
considered “recalcitrant” to the treatment. In the current investigation, we aim at determining the
efcacy of removal of a green ink water dispersion, using 5 laser treatments: Nd:YAG nano- and
picosecond lasers in normal and array mode and Ruby nanosecond laser, keeping the total irradiated
energy constant. The UV–Vis spectroscopy of the treated samples indicate that Nd:YAG picosecond
laser is most efective, and the Ruby nanosecond laser is the least efcient. Fragment compounds
generated from the pigment and siloxanes are common to all treatments, whereas hydrocarbon
emerge by a larger amount upon Nd:YAG nanosecond treatment. Fibres are formed upon picosecond
treatments and when operating in array mode, and lamellae are achieved by Ruby nanosecond laser
treatment. Residual particles suspensions are very heterogeneous upon nanosecond treatments