There is a question people turn around and ask at the door, once the consultation is over. "So how long does this last?" A single number would be the easy answer, but I usually hand the question back slightly rearranged. More useful than how long it lasts is how you notice when it starts to loosen.

Restored tension does slacken a little as time passes. But a face never gives way overnight. It sends its signals from small places first, and from exactly the places a mirror does not tend to examine. Learn to read those, and the answer to "when should I come back?" is written on the face rather than the calendar.

A face does not give way overnight. It always signals first; we are simply slow to read it.

The line does not snap, it slackens

Part 1 used a tent. The canvas stands up not because the canvas is stiff but because the guy lines are taut. Carry that image forward and the loosening of restored tension is not a line snapping. It is a taut line giving out a little slack.

So the change does not drop like a step. It arrives as a very gentle downward slope: almost no difference between yesterday and today, a visible one between one season and the next. That gentleness is the first reason the signals get missed.

The second reason is that time keeps moving in the meantime. Quite separately from the tension we restored, the conditions that create sagging — age, postural habits, weight going up and down — do not pause. Which is why, in the consulting room, I say "it is time to look again" rather than "the effect has ended." A face is less a building finished once than a house you keep living in and keep touching up.

The signals arrive from the side, not the front

Slackening shows up last of all in a face seen head-on. And head-on is precisely what a mirror keeps showing you. Here are the places I check first.

Where the signal appears firstHow it feels
The profile, from the jawline down past the earThe front looks the same, but a photo taken from the side feels unfamiliar
The moment the expression dropsFine while smiling, heavier below the moment the face relaxes
Later in the dayLess noticeable in the morning, heavier as the evening comes on
Habits that changed without you noticingThe camera angle, the parting, where the concealer goes — all quietly different

That last row is more reliable than it sounds. We adjust by habit long before we register a change in words. If you have started taking every selfie from the same side, or quietly deleting the ones that catch your profile, your eye has already read something. Your hands were simply faster than your vocabulary.

Checking for signals, I look below the jawline and along the profile before I look at the front — with my fingertips rather than my eyes.
Checking for signals, I look below the jawline and along the profile before I look at the front — with my fingertips rather than my eyes.

Why the mirror misses all this

There is a mismatch I meet often at this stage: the picture in someone's head and what is actually happening are not the same picture.

Common assumptionWhat actually happens
The effect ends on some particular dayThere is no ending day; it comes down very slowly
Seeing it daily, I would know firstThe eye that sees it daily is the dullest judge
A front-on photo will confirm itThe profile and the relaxed face say it sooner
Coming back means starting overComing back means finding what loosened first

The second row is something part 5 raised too. A single day's difference is so small that the eye readjusts to it each time. An eye that was dull to the gains is exactly as dull to the slackening. So the photograph taken before treatment, and the one taken afterwards in the same spot under the same light, earn their keep a second time here. Memory has already adapted to the new face; a photograph never adapts.

The fourth row deserves a word too. Coming back does not mean repeating the same thing in the same measure. An examination always starts by working out what loosened first, and that answer can differ from last time. The anchors holding a face are not a single point, and the order in which they slacken is not the same from person to person.

The eye that was dull to the gains is exactly as dull to the slackening. That is why I ask for photographs rather than memory.

So when should you come back?

I do not fix a date, for the same reason I gave in part 5: the degree of sagging, the thickness of the skin and the shape of a daily routine differ with every person. Here is what I suggest instead.

When the signal shows up in one place only, it is fine to keep watching. It may be that day's condition, or the lighting. But once two or three places are saying it together, that is the point to look at it with me. An unfamiliar profile, a heavy relaxed face and a changed camera angle add up to three places telling the same story.

The same goes for a signal that no longer tracks the time of day. When the impression holds steady from morning to night rather than shifting, something other than that day's swelling or fatigue may have moved.

Carry on with your routine in the meantime. Pushing firmly upward with your hands still does not suit this stage, and it remains true that surface care and the framework story do not compete. Different layers, different jobs.

And when you cannot settle it either way, coming in so we can look together beats a long session in front of the mirror. Some of it has to be checked with fingertips.

What sets the timing of the next visit is the face, not the calendar. Which is why I always suggest we look at it together.
What sets the timing of the next visit is the face, not the calendar. Which is why I always suggest we look at it together.

Write down the signals, not the dates

If a few months after a lift you have found yourself uneasy, that is not necessarily a sign that something has gone wrong. It may be that you have only just begun reading the signals your face sends. Reading them does not mean living anxiously; it means being able to choose the moment you respond.

So next time you stand in front of the mirror, try asking "where is the signal coming from?" instead of "how long is left?" Locate the place and it becomes clear what to look at today and what can still be left alone.