This all depends on the size of the tattoo. Larger scales work like sleeves, backs etc will always require more than one session. Some medium sized tattoos in difficult placements such as ribs may also need to be split over a couple of sessions.
However most smaller tattoos that can be done in one session will be. It is not always possible for our artists to just do an hour or 2 on a tattoo at a time. If you are unsure about this please contact us and we can advise.
The thing to bear in mind is that if you can get the tattoo finished in one session you will only have to go through the healing process once the tattoo will all heal at the same time.