The Picotech was the first picosecond laser to provide pulsed energy within 100 femtoseconds. Unlike traditional lasers, which simply heat pigment in the skin, these short pulses break down pigment into tiny particles. Therefore, the Picotech Nd YAG laser machine is more efficient to remove tattoo inks, especially blue and green colors, which are difficult to remove with conventional lasers.
The laser is intense enough to remove tattoo inks despite it might being much more powerful than necessary. But the energy is so concentrated that it won't cause significant effect to the skin around the tattoo, which makes it safer.