The term "brow tattoo" seems so dated now, and really techniques and pigments and tools and after-care have improved significantly over the past years. We do get clients who had permanent makeup done quite a bit of time ago, using tattoo machines. Pigment sometimes is still very much visible, and often the color has changed, or the strokes have "spread" to big blocks, or their facial structure has changed and now the brows are visibly lopsided. They are dissatisfied with what they see and are looking for options!
Short of tattoo removal, we can't change what is already there. But we can use Microblading over and around the existing work to refresh it or to hide it. We can add individual strokes over a faded tattoo, so the effect looks like brow powder under brow hairs. We can even change the brow shape, by adding strokes to key areas, like the arch and tail.
If you are looking for a refresh, I suggest to come in for a consultation first (it's free!). We will use a brow pencil to draw on the Bespoke Brow on your existing work, and you can see what the results will look like, before deciding to proceed.