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Efficient Picosecond Laser for Tattoo Removal in Rat Models.

Yan Qu1, Lei Wang2, Pingyu Zhou1

  • 1Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China (mainland).

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|July 26, 2020
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Summary

Picosecond laser tattoo removal is effective. A 1.9 mJ/μbeam energy level demonstrated optimal pigment particle crushing and tattoo removal in rat models and human volunteers.

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Area of Science:

  • Dermatology
  • Laser Technology
  • Aesthetics

Background:

  • Tattoos are increasingly popular, but adverse effects like scarring and pigment issues necessitate standardized removal methods.
  • Current tattoo removal techniques often lack uniform operational standards, driving demand for improved technologies.
  • Adverse tattoo effects include poor aesthetics, scar hyperplasia, and abnormal pigmentation, highlighting the need for effective removal solutions.

Purpose of the Study:

  • To assess the tattoo removal efficacy of picosecond laser technology at varying energy levels.
  • To determine optimal energy parameters for picosecond laser tattoo removal using animal models.
  • To validate the efficacy of the identified optimal parameters in human volunteers.

Main Methods:

  • Tattoos were created on Sprague-Dawley rats, followed by picosecond laser treatment at diverse energy settings.
  • Optimal energy levels and parameters were selected based on tattoo removal effectiveness in the rat model.
  • Four human volunteers seeking tattoo removal were treated using the determined optimal picosecond laser energy parameters.

Main Results:

  • The 1.9 mJ/μbeam energy level demonstrated superior hollowing and pigment particle fragmentation in rat skin.
  • Pathological staining confirmed the 1.9 mJ/μbeam energy laser provided the most effective tattoo removal.
  • Clinical evaluation of human volunteers corroborated the efficacy of the selected optimal energy parameters.

Conclusions:

  • The study identified 1.9 mJ/μbeam as the optimal energy value for picosecond laser tattoo removal.
  • This research provides a standardized evaluation criterion for tattoo removal procedures.
  • The findings offer a clinically viable alternative for tattoo removal using optimized picosecond laser settings.