You came here for a number — so many weeks, so many months — and the honest answer turns out to be a signal instead. It comes from your own face, you'll know it the moment it arrives, and the rest of this page is simply the reasoning behind it.
Your face gives the signal, not the calendar
Start with what the treatment actually does, because the timetable falls straight out of it.
Anti-wrinkle injections — Botox® is the name nearly everybody uses for them — relax the small facial muscles that crease the skin. A muscle that has eased off isn't folding the skin above it, so the line it used to press in softens. None of that was built to hold. The muscle comes back to full strength in its own time, the habit that made the line comes back with it, and your result fades while that happens.
So here's the answer in one line: when the movement comes back, you can be treated again. That timing belongs to the treatment rather than to a rule somebody invented, and for most people it works out at a handful of times a year rather than anything like a monthly appointment.
How long each of those stretches runs is a separate question with a different answer for every face, and how long Botox lasts sets out the four things that decide it. What matters here is only this: your face tells you when, and it tells you in movement rather than in the mirror. One morning you frown at something and the frown lands with its old weight in it. That's the signal, and it's yours.
Why the gap between rounds earns its place
There's a good reason not to go back the moment the mood takes you, and it has nothing to do with rules and everything to do with information.
Treat again while the last round is still working and two things quietly go missing. The new amount lands on top of an amount that hasn't finished, so nobody can say what is actually in your face now. And nobody has seen what your face did with the last round on its own, because that only becomes visible once your movement is back.
You've met this problem before, at an optician's. They sit you behind the big frame, drop a lens in front of one eye and ask you the question. Better, or worse? Then the next lens, and the same question again. It would be a good deal quicker to put three lenses in at once, and it would also be useless, because when the letters went sharp you'd have no idea which of the three had done it. One change, then the question, then the next change: that plodding order is the whole method, and it's why you walk out with the right prescription.
A round of anti-wrinkle injections is one change, and the answers arrive in that same plodding order. Your result is the letters going sharp, and it turns up at the end of your ten days rather than on the evening of the appointment — why the first days show nothing is the piece for that. The question comes later still, when your movement returns and tells you how long the change held.
An optician has one advantage over anybody treating a face, mind, and it is worth saying out loud. A lens that isn't working comes straight back out of the frame. Nothing placed in a muscle can be lifted out again, so waiting is the only way anybody gets an answer here. That's what makes the gap worth keeping, rather than any date on any wall chart.
It's also exactly why we recommend a post-treatment appointment. Somebody chose your areas after watching your face move, and that appointment is where they get to see what your face actually did with them — which is a good deal more than anybody knew about you the first time round, and it shapes whatever gets planned next. If you'd like something to look at together, a pair of your own photographs, taken the right way, is worth more than anybody else's pair.
Then there's one thing only you can supply, and it arrives long after that appointment: the day your movement comes back. Write the date down when it happens. It is the one fact about your own face that nobody could have handed you in advance, and it settles when you'd sensibly come in again.
Why "as often as possible" isn't the goal
There's a quiet assumption tucked inside this question, worth pulling out and looking at: that more treatment, more often, means more of what you came for.
It doesn't, and the reason is that what you came for was never the treatment. You wanted to look like yourself on a good morning. A face that still moves is a large part of that, and chasing the shortest possible gap walks you towards the one result nearly everybody says they don't want. A lighter hand is our instinct for precisely this reason, and baby Botox is where we've written that out properly, honest cost and all.
None of which makes coming back a failing. This treatment ends by design, so coming back is simply what having it looks like, and there's nothing else it could look like. A fifth round is only a fifth round, and it is also the easiest one to plan well, because by then something is genuinely known about that particular face.
Is Botox safe?
You'll have met two answers to this and found both of them a bit too sure of themselves. Here's the middle one, which happens to be the honest one.
Anti-wrinkle injections have been performed for over twenty years. That's a long stretch of thoroughly ordinary use, and it's a fair thing to put in the balance.
Then there's the shape of the thing, which does a lot of the reassuring. Think of a book borrowed from the library. It sits in your house for a while, you read it, it goes back, and your house holds exactly the books it held before. Borrow it again next spring and nothing has stacked up in the hallway, because each loan had finished before the next one started.
Rounds of this treatment sit the same way, and that is the part worth having. One round has finished before the next one begins, so nothing stacks up in your face and nothing is left running there while you decide. Two things the library doesn't offer, mind. Nothing here is stamped with a return date, so your movement comes back gradually and at its own pace rather than on some particular Tuesday. And nobody has to carry this one back; it ends whether you do anything about it or not.
Which brings us to the part that decides most of the rest, and it is a person rather than a product. The hands doing the injecting are the real variable in this treatment, both in how safe it is and in how it ends up looking, so the question worth asking anywhere at all is who will be treating you and what they are trained to do. Every injectable at Broadway Retreat is given by experienced medical professionals at our CQC-registered clinic on Broadway in Manchester, and a consultation always comes first, because whether the treatment suits you is the first thing to settle.
Then the honest other half. Effects do turn up sometimes, and they are temporary like everything else here. They also tend to be a matter of how much and where rather than of the product itself: a brow sitting heavier than you'd wanted, one side reading differently from the other, a small bruise where a needle went in. The bruise is the ordinary one, and Botox aftercare explains what it actually is and what helps. The heavy brow has a mechanism behind it worth understanding, and our piece on the Botox brow lift sets out both how it happens and how a plan stays clear of it. All of which is an argument for qualified hands and a proper look at your face beforehand, which is exactly what a consultation is.
A few things are worth saying out loud before you're treated, and none of them is a warning so much as a reason to talk. If you're pregnant or breastfeeding, tell us, because that on its own changes what we would advise and when. If you have a condition involving your muscles or your nerves, tell us, because this treatment works on the message passing between the two, and anything already part of that conversation is worth us knowing about. Same goes for any medicine you take, and for any supplement as well. We ask anyway, the answers are genuinely useful, and now and again the honest advice that comes back is that this isn't the moment.
Come and work out your own rhythm
If you're due, or you think you might be, the useful first step is a look rather than a syringe.
Arrange a consultation and nothing gets decided about areas or amounts until we've seen your face in motion. If you've been treated elsewhere, bring what you know with you: roughly when it was, which areas were done, and the week your movement came back. That last one does more work than anything else you could tell us. If the appointment itself is the part you're unsure about, what actually happens at a consultation has it written out step by step, and the anti-wrinkle injections page has the fuller picture of the treatment.
The date of your next appointment is already written down somewhere. It's written in your own face, and it arrives on an ordinary morning as a frown that pulls the way it used to.