A full sleeve black tattoo on the upper arm, forearm reached 75% fading after an unknown number of sessions at Removery over 2 years and 6 months.

After treatment sessions at Removery.
The tattoo
A full sleeve black tattoo on the upper arm, forearm, 5–10 yrs old when treatment began.
The forearm drains adequately but sits further from the major lymph nodes of the torso.
Older ink benefits from years of natural immune-driven fading: macrophages have been working on the particles throughout the tattoo's life, reducing effective density before treatment begins.
Bottom line
The last 5 to 10 percent of clearance is consistently the hardest phase: residual ink sits deepest, immune response slows, and the composition of what remains is unknown.
Similar cases in the gallery: Large Multicolor Upper Arm Tattoo: 50% Fading After 5 Sessions at Removery — Black and Blue Upper Arm Tattoo: 75% Fading After 4 PicoWay Sessions at Removery