What people say
"Permanent makeup fades completely after a year"
What Mugi sees
It fades, but not to nothing, and not on a schedule.
How long it lasts depends on your skin, how much sun you get and how deeply the pigment sits. Visible pigment, the appearance you wanted, and the point at which you would choose a refresh are three different things, and they do not arrive together. A single number would flatten all of that, so there is not one.