Yes, there are several anesthetic ointments, which are applied before or during the tattoo procedure.
Yes, they can. In the modern medicine laser technology is advanced to stage that, large areas of skin can be worked over few sessions. It is possible though to remain light scars on some areas. It all depends on the laser’s force.
The time to complete a project is strictly individual. It depends on the complexity of the design - from few hours to few sessions. Large and complex tattoos take time.
Yes, it is possible. Small tattoos are easy to cover up, on the other hand with larger ones you are completely dependent on your tattoo artist.
Skin completely heals between 3rd to 4th week. During this period avoid pools, sand, beach, solarium, sauna, sun.
Follow the advice your tattoo artist gave you. The first 24 hours wash 3 times a day with an antibacterial soap, then dry and apply ointment. From the second day on wash once a day and apply ointment several times to keep the skin hydrated and prevent from forming crust.