Clinical photographs of removal of red, green, and black pigments over time.

The 532 nm lasers were the most effective in removing red colored tattoos by week 3. The 532 nm picosecond laser resulted in less epidermal damage post-treatment and rapid healing than the 532-nm nanosecond laser. The 755 nm picosecond laser was the most effective in removing green colored tattoos. Note: Pre: pre-treatment; Post: immediately after laser treatment; Week 3: 3 weeks after the laser treatment.