You should see visible results after full recovery from each tattoo removal laser session - including after your first session of pico laser tattoo removal.
With correct lasers and treatment settings, you should see good results after a few treatment sessions (minimum 3 sessions).
These factors affect how fast your tattoo can be removed:
Location of your tattoo
Type of ink colors - Black is easiest to remove
Amount of ink used - Professional tattoos are harder to remove due to larger amount of tattoo ink used.
Skin type - its harder to remove tattoo if you have darker skin as lower laser settings are used to ensure safety.
I suggest that you use a Picosecond Laser for tattoo removal - it is proven to be more effective than Q-switched nanosecond lasers. There are several brands of good picosecond lasers for tattoo removal - PicoPlus, Picosure, Picoway, Discovery Pico.
For more detailed information on tattoo removal - comparison, costs and results, check out this Guide to Tattoo Removal.
Hope that you see results soon!
Warmest regards,
Dr Justin Boey