In terms of tattoo removal, the number of treatments for  with the enlighten laser can vary quite a lot, as the number of treatments will depend on: Skin tone Depth of the ink in the skin Type of tattoo  Colour of the ink. In terms of skin rejuvenation, you will require 2 – 4 treatments on average, though again, this depends on what is being treated, the intensity of the condition and your skin type.