A Doctor's Walk-Through of Anti-Wrinkle Injections: What Actually Happens in the Chair

Anti-wrinkle injections are the most requested non-surgical treatment in the world, and yet most people have never seen what really goes on during an appointment. There is the pop-culture version, all frozen foreheads and startled expressions, and then there is the reality, which is quieter, more precise and far more personal than the headlines suggest.

In one of our recent clinic reels, I talked through a treatment from start to finish while a returning patient came in for a top-up. It is a lovely snapshot of how the treatment is done well: the product is carefully prepared, the muscles are mapped by watching how the face actually moves, and the dose is tailored to what that particular person wants their face to look like afterwards. This patient, for the record, does not want to look frozen. She wants softer lines while keeping every bit of her expression.

That single detail says a lot about how anti-wrinkle injections should be approached. Below, I take you through the whole process the way I do it, from the science of how the treatment works to the mapping, the dosing decisions, the two-week review and the aftercare that keeps results looking natural.

How anti-wrinkle injections actually work

The active ingredient is a purified protein called botulinum toxin type A. It sounds dramatic, but in the tiny, medical-grade doses used in aesthetics it does one very specific thing: it temporarily blocks the chemical signal that tells a muscle to contract. When a muscle can't fully contract, it relaxes, and the skin sitting on top of it stops being repeatedly folded every time you frown, raise your brows or squint.

That distinction matters, because it explains what the treatment can and can't do. The lines that respond best are dynamic lines, the ones that appear when you make an expression. Horizontal forehead lines come from the frontalis muscle lifting the brows. The vertical "11s" between the brows come from the glabellar complex, a little cluster of muscles (the corrugators and procerus) that pull the brows together when you concentrate or frown. Crow's feet fan out from the orbicularis oculi around the eyes. Relax those muscles and the overlying lines soften.

Static lines, the creases that stay etched even when your face is at rest, are a different story. Anti-wrinkle injections still help by stopping the movement that deepens them further, but very set-in lines may need support from treatments like Profhilo, polynucleotides or skin boosters that work on skin quality rather than muscle movement. A good practitioner will tell you honestly which category your lines fall into.

The effect isn't instant, and it isn't permanent. Most people notice something starting around day three to five, with the full result settling by about two weeks. Movement then returns gradually, and typical results last somewhere in the region of three to four months before you're ready for a repeat. Everyone metabolises the product at a slightly different rate, so those timings are a guide rather than a promise.

Preparing the product and reading the face

The reel opens with a step people rarely think about: preparation. Botulinum toxin arrives as a freeze-dried powder and has to be reconstituted, or diluted, with sterile saline before it can be used. The concentration that results affects how the product behaves once it's in the skin, including how much it spreads from each injection point. Getting that dilution right is part of the craft, and it's why this should always be done by a trained medical professional working with genuine, prescription-only product.

Once the serum is ready, the next job is mapping. I mark the face while the patient makes expressions, watching where the muscle movement is strongest and where the lines form. This is the part that separates a thoughtful treatment from a template. No two foreheads are identical. Brows sit at different heights, muscles pull with different strengths on the left and right, and the pattern of someone's frown is as individual as a signature.

By asking the patient to raise their brows, frown and squint, I can see exactly where to place each tiny injection to get an even, balanced result. Mapping properly is also how you avoid the classic pitfalls: a heavy brow, an uneven "cocked" eyebrow, or a forehead that's smooth in the middle but still creasing at the edges.

Why the placement of each injection matters

The frontalis is a broad, fan-shaped muscle, and it's also the muscle that lifts your eyebrows. Treat it too aggressively or too low and you risk dropping the brow or creating a heavy feeling across the forehead. That's why, for this patient, I chose to place the forehead injections a little lower down and keep the dose light, preserving her ability to lift and express.

The glabella, by contrast, I treated a touch more strongly. The muscles that create the frown between the brows are stronger and can take a firmer dose without affecting expression in the same way, and softening that area tends to open up the eyes and lift the general mood of the face. Reducing the "angry" frown line is often the change that makes people say they look more rested. Placement, depth and dose are all dialled to the individual muscle, which is why a face that's mapped and treated by a doctor looks like a well-rested version of you, not a different person.

Keeping expression: the light-touch philosophy

The patient in this video is a perfect example of a request I hear constantly. She likes reduced lines but doesn't want her face to be frozen. She wants to keep her full range of expression.

This is very achievable, and it's the standard we aim for at Wellface. A frozen look usually comes from too much product, product placed without regard for how the face moves, or a one-size-fits-all dose. When the dose is kept deliberately light and placed with the individual's anatomy in mind, you get softening rather than shutting down. You can still frown, still raise your brows, still look surprised or amused, but the deep creases that used to come with those expressions are gentler.

There's a nice long-term argument for this approach too. Preventing the constant, forceful folding of the skin means fewer of those dynamic lines have the chance to become permanent static lines over the years. Many patients start anti-wrinkle treatment partly to slow that etching-in process, and a natural, movement-preserving result fits neatly with that goal.

The bit that isn't about needles

One of the most telling moments in the reel has nothing to do with injecting at all. Between the technical steps, I describe catching up on everything else: children, husbands, holidays, life, and how everyone is doing in themselves. It might sound like small talk, but it's a genuine part of doctor-led care.

Seeing the same faces over months and years builds a relationship, and that relationship is what makes tailored treatment possible. When your practitioner knows you, remembers what you asked for last time and understands how you like to look, they make better decisions with the syringe. It also means the appointment is a calm, unhurried experience rather than a conveyor belt. Aesthetic medicine done properly is care, and care includes noticing how someone is, not just what their forehead is doing.

Downtime, aftercare and the two-week review

Anti-wrinkle injections are quick, and the recovery is genuinely minimal. The injections themselves take only a few minutes once the mapping is done, using very fine needles. You might feel a brief sting, and some people get tiny bumps at the injection sites that settle within an hour or so, along with the odd small area of redness or, occasionally, a little bruise.

Most people head straight back to work or on with their day. There are a few sensible aftercare rules that help the product settle where it's meant to. For roughly the first day, it's wise to stay upright for a few hours, avoid rubbing or massaging the treated areas, skip strenuous exercise, hot yoga, saunas and steam rooms, and hold off on facials or lying face-down for a treatment. These precautions reduce the chance of the product migrating to a muscle you didn't want to treat.

Why I always review at two weeks

In the reel, I say I'll see the patient again in two weeks to check everything is balanced, and top up if needed. This is deliberate, not an afterthought. Because the full effect takes about a fortnight to develop, two weeks is the right moment to assess the result properly. If one side has responded slightly more than the other, or a small area could do with a touch more, that's the appointment to fine-tune it. It's a mark of careful practice rather than a sign anything went wrong, and it's how consistently even, natural results are achieved.

Common questions about anti-wrinkle injections

Will I look frozen or expressionless?

Not if the treatment is tailored to you. A natural result comes from an appropriate dose placed with your individual muscle movement in mind. Plenty of my patients specifically ask to keep their expression, and I map and dose accordingly. If you want a softer, barely-there result, say so at your consultation, because the plan is built around what you want.

How long do the results last?

For most people, results last around three to four months, though this varies with the individual, the area treated and how strong the muscles are. Movement returns gradually rather than all at once. Many patients settle into a rhythm of treatments a few times a year, and some find that over time their muscles weaken slightly with regular treatment, meaning they can space appointments further apart.

Does it hurt?

Very little. The needles are extremely fine and the injections are quick. Most people describe a brief sting or a tiny pinch at each point. Any discomfort is over in seconds, and there's no lingering soreness to speak of afterwards.

When will I see the difference?

You'll usually start to notice softening around three to five days in, with the full effect settling by about two weeks. That's why I book a review at the fortnight mark rather than judging the result on the day of treatment.

Who is a good candidate?

Anti-wrinkle injections suit healthy adults bothered by dynamic lines on the forehead, between the brows or around the eyes. They aren't suitable during pregnancy or breastfeeding, or for people with certain neuromuscular conditions. The clearest way to find out if the treatment is right for you is a face-to-face consultation, where I can assess your skin, your muscle movement and your goals.

Come and talk it through with me

If the idea of softer lines with your expression intact appeals to you, the best next step is a conversation with me. Every treatment I do starts with an honest assessment of your face, a discussion of what you'd like to change and a plan that fits it, whether that's anti-wrinkle injections alone or alongside something like Profhilo or skin boosters for overall skin quality.

Our clinics in Cobham, Esher and Wimbledon are led by experienced doctors who treat this as medicine first and aesthetics second. Book a consultation with me and I'll take the time to understand what natural means for you, then map, dose and review with the care you saw in the reel.