A medium white and pink tattoo on the forearm reached 50% fading after 4 sessions at Steel and Stones Tattoo Studio over 1 year.

Before (session 0) and after (session 4) at Steel and Stones Tattoo Studio.
The tattoo
A medium white and pink tattoo on the forearm on Type II skin (fair, tans sometimes but often burns).
Fitzpatrick Type II is favorable: tolerates standard energy settings with minimal pigmentation risk.
The forearm drains adequately but sits further from the major lymph nodes of the torso.
Timeline
4 sessions at 8-10 weeks intervals accounts for roughly 27 weeks of active treatment.
The total reported duration was 1 year, which means roughly 24 weeks of gaps between sessions.
That spacing is within the generally accepted 6 to 12 week range.
The laser
Steel and Stones Tattoo Studio treated this case with the PicoSure, a picosecond platform.
For white and pink ink, it operates at 755 nm with a pulse duration of 550 - 750 ps.