Is makeup that conceals the effects of vitiligo and remains for long periods (years), then is removed by applying something else, considered forbidden and akin to tattooing, especially if it requires the use of special devices to embed it into the skin?

This procedure is one of the permissible cosmetic surgeries, because it is for restoring something to its original creation and not for seeking an increase in beauty. It is not considered tattooing, as tattooing is an increase in beauty and not a removal of a defect. The fact that the procedure is performed with devices does not affect its permissibility, as long as there is no harm or prohibition involved.