What is the average number treatments to remove a black tattoo on the foot with Enlighten?

Regardless of brand, it may require 6 or more sessions to see desired results with a picosecond laser.  This is far better than 12 or more sessions with a nanosecond, q-switched laser of the past.  Consult with an experienced laser provider.

Tattoos can be removed with either with 1st generation (Q-Switched or Nano) or 2nd generation (Pico) laser technology.  Laser removes tattoo by shattered up ink pigments from the skin, releasing it into the bloodstream to be flushed out by the immune system through the liver.  Rinse and repeat this "laser breaks down, immune system flushes out" cycle every 8-10 weeks until tattoo removal goal is accomplished.  If tattoo is new, you'll want to wait until it's completely healed (around 2-3 months) before laser treatment. The number of treatment is depending on various factors (lighten for cover up vs complete removal, laser technology, physician's experience, tattoo size, ink saturation, colors, overall health, skin type, tattoo location, etc.. We have utilized both Nano/PICO technology and PICO is costlier; but removes tattoo much more efficiency with less discomfort. We recommend seeking laser tattoo removal treatment from a reputable professional healthcare provider in your area who is specialized in tattoos removal with both Nano/Pico technology.