The extent of any downtime for non-laser eyebrow tattoo removal depends on the individual as well as the particular factors involved. In general, the extent of downtime depends on how heavily implanted the ink is, the amount of surface area the ink covers, and the length of time the ink has been in the skin.
Immediately after your visit your brows will likely look unchanged except for some minor redness similar to after an eyebrow wax. Then you can expect about 3 days of healing where the ink continues to be drawn out of the skin on its own. During this time you may see some crusts start to form which eventually will disengage on their own like all superficial scabs do. Then once your skin is smooth again you may notice that your brows are looking lighter or areas without the unwanted ink altogether.