The first days
Needle punctures trigger bleeding then clotting, then an inflammatory phase: the lip swells, feels tight and looks darker and more intense than the goal. A thin scab or 'skin' forms over the surface within a day or two, carrying a lot of excess surface pigment with it.
When that layer flakes off (days 3–7), the lip underneath looks alarmingly pale — the 'frosted' or 'colour's gone' stage. Colour then gradually resurfaces over 2–4 weeks as the epidermis thins and settles.
Where the pigment ends up
Some particles are flushed away immediately. Others are engulfed by dermal macrophages and fibroblasts and effectively held in place; a portion of those cells stay put for years, which is what makes the result last. Ongoing slow clearance by the lymphatic system is the fade.
Because different pigment ingredients are cleared at different rates, a healed lip can drift in hue over time — warm browns fading to leave a cooler or pinker residual, for instance.
Why the touch-up exists
Uneven inflammation and scabbing mean uneven retention. The 6–8 week perfecting session is done once healing is complete, so the artist can see exactly where colour dropped out and rebuild only those areas.
