At the consultation, the patient is 99.9% likely to ask how long the tattoo will be removed by laser. Everyone is interested in time. This is a proven fact in practice.
You can dodge as you like, try to soften the blow, but the answer will be the same: "It takes a long time".
It takes 1.5-2 years to remove even a small tattoo! Naturally, when you voice such terms, many clients lose enthusiasm.