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. 2023 Jan 20;38(1):45. doi: 10.1007/s10103-022-03704-y

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Fig. 2 — A Photo of a patient with enlarged facial pores; b 2 months after one fractional picosecond laser treatment (wavelength 755 nm, energy 0.4 J/cm.², frequency 5 Hz, spot size 8 mm)