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The tattoo removal effects of groups with different energy levels: (A) 1.1 mJ/μbeam, (B) 1.9 mJ/μbeam, (C) 2.5 mJ/μbeam, (D) 2.9 mJ/μbeam, and (E) control group. The treatment effect of picosecond laser with different energy parameters on tattoo removal illustrates that the laser removal effect of the 1.9 mJ/μbeam (B) energy value is the best. Magnification of each figure is 5×.
