Facts: The Long Term Effects of Botox® Injections
The history of Botox® began when a toxin called Botulin was first discovered connected to a very rare form of a paralytic illness.
Last updated: September 2026
Becoming a skilled Botox® injector doesn’t happen overnight. It takes careful training, in-depth knowledge of facial anatomy and the injection sites that sit on top of it, and a lot of practice. In this article we share our top ten Botox® techniques and tips for becoming a confident cosmetic injector — and we anchor each one to what the current product labeling actually says.
As with any new procedure, the more often you perform it the more comfortable you become. That is why we recommend treating friends and family before officially adding Botox® injections to your practice’s roster, so you can learn to see even the very subtle differences between your patients’ facial structures.
Two things have changed since this guide was first published, and both belong in your technique. There are now six FDA-approved botulinum toxin products for aesthetic use in the United States rather than three, and the BOTOX® Cosmetic label has grown a fourth aesthetic indication, with a fifth under FDA review. Both are covered below.
It is vital that before you treat your first patient you are absolutely sure you understand facial anatomy. You need to know not just the proper name of each muscle, but its location, its function, its depth, and which muscles oppose it. You also need to know where the vessels run.
Some healthcare providers find it helpful to keep a facial injection chart on hand. Besides making review quick, a chart is a useful tool for explaining the details of a Botox® injection to your patients.
The anatomy that matters most for safety is the anatomy you cannot see. In the glabellar complex, the levator palpebrae superioris sits immediately behind the corrugator; diffusion of even a small amount of product into it is the mechanism behind eyelid ptosis. In the lateral canthal area, the zygomaticus major sits just below the crow’s-feet field, and treating too low produces a lip or smile asymmetry that no amount of touch-up will fix before the toxin wears off.
There is a reason “go back to the basics” is repeated so often: it works. If you start to feel overwhelmed treating patients, think back to the training you received and mentally walk yourself through the different Botox® techniques you learned while earning your certification.
Do this out loud, as part of the conversation you have with your patient about the procedure. Talk them through every step both before and while you are administering it. The repetition reinforces your own sequence and it puts your patients at ease at the same time.
Allergan Aesthetics — an AbbVie company since 2020 — is the only manufacturer of BOTOX® and BOTOX® Cosmetic, but there are now six FDA-approved botulinum toxin products for aesthetic use in the United States, each from a different manufacturer. Each one has its own reconstitution instructions and its own diluent volumes, and each one carries a separate potency assay.
That last point is the one that matters clinically, and it is the reason this seemingly common-sense tip is on the list. It is entirely possible that your practice will hold stock from more than one manufacturer at the same time. Always verify which product you are holding before you begin:
“Units of biological activity of BOTOX Cosmetic cannot be compared to nor converted into units of any other botulinum toxin products.”
There is no conversion ratio. A dose written in one product’s Units is meaningless in another’s. Chart the product name alongside the dose every single time, and never carry a dose forward from a previous visit without confirming which product was used.
When this guide was first written, most injectors were choosing between three products. There are now six, and a patient who says “I had Botox® last time” may well mean something else entirely.
| Product | Generic name | US aesthetic approval |
|---|---|---|
| BOTOX® Cosmetic | onabotulinumtoxinA | 2002 |
| Dysport® | abobotulinumtoxinA | 2009 |
| Xeomin® | incobotulinumtoxinA | 2011 |
| Jeuveau® | prabotulinumtoxinA-xvfs | 2019 |
| Daxxify® | daxibotulinumtoxinA-lanm | 2022 |
| Letybo® | letibotulinumtoxinA-wlbg | 2024 |
All six carry an aesthetic indication for glabellar lines. Indications beyond the glabella differ by product — check the label for the product in your hand, not the one you know best.
Double-check even tiny details. A few habits from our Botox® training program:
Technique starts before the needle goes in. The label is specific on all three points, and getting any of them wrong quietly costs you potency — which the patient experiences as “it didn’t work on me.”
The needle you choose plays a large role in managing patient pain during a Botox® injection. The label instructs you to attach a 30–33 gauge needle once the product is reconstituted. In practice most injectors work at the finer end of that range — a 31 or 32 gauge insulin-style syringe — because the smaller bore means less discomfort on entry and better control of a small volume.
Use a short, single-use needle, and change it between patients without exception. These are available through any standard medical supplier. Bear in mind that a fine needle dulls quickly; if you are treating multiple areas in one session, a fresh needle partway through is more comfortable for the patient than a blunted one.
Botox® is not a one-size-fits-all treatment. Every patient is different, and it matters that you dose for the individual patient and not just for the procedure. Male patients generally have bulkier corrugator, procerus and frontalis muscles than female patients, and typically require higher doses for an equivalent effect.
Dose for the individual — but know the labeled number you are departing from, and document the departure. The chart below is the FDA-approved dosing for BOTOX® Cosmetic.
| Treatment area | On-label total dose | How it is distributed |
|---|---|---|
| Glabellar lines | 20 Units | 4 Units into each of 5 sites |
| Lateral canthal lines (crow’s feet) | 24 Units | 12 Units per side, across 6 sites total |
| Forehead lines | 40 Units | 20 Units forehead (4 Units × 5 sites) plus 20 Units glabellar — the forehead indication is approved only in combination with glabellar treatment |
| Platysma bands | 26, 31 or 36 Units | Selected by severity of platysma prominence |
| Masseter prominence | Not FDA approved | Off-label in the US; sBLA accepted by the FDA in August 2026 |
Doses above are for BOTOX® Cosmetic and do not transfer to any other product.
You will see glabellar totals well above 20 Units recommended in the aesthetic literature and used routinely in male patients. That is a legitimate clinical decision within your scope — but it is off-label, it belongs in your informed consent, and it belongs in the chart. Knowing you are off-label is the difference between a considered clinical judgement and an accident.
When you are administering Botox® treatments for glabellar and lateral canthal lines — two of the most popular procedures — make sure your bevel is oriented up and aimed away from your patient’s eye.
The label gives two separate margins for the glabellar complex, and they are frequently collapsed into one rule of thumb. Both matter:
Respecting both is what keeps product away from the levator palpebrae superioris. When it does reach that muscle, the result is eyelid ptosis after Botox® — and it is worth knowing that eyelid ptosis is the most commonly reported adverse reaction in the glabellar trials, not a rare freak event. It resolves as the toxin wears off, but that is weeks of an unhappy patient, so the margins are worth more than the extra millimetre of correction.
Injections are almost always going to be at least a little painful, even with a fine needle. To improve your patient’s comfort, numb the injection areas before you administer the procedure.
Because the injections are shallow, the simplest approach is ice — applied for a minute or so immediately before injecting. A topical anaesthetic is an option where a patient is particularly anxious or the field is large, but it requires enough dwell time to actually work, so build it into the appointment rather than applying it as you go. Vibration applied adjacent to the injection site is another low-cost option that works on the same gate-control principle as ice.
Not everybody is a good candidate for Botox® treatment. Some patients are more prone to serious side effects than others, and for some the treatment simply won’t deliver what they are hoping for. Your patient’s history and current medical status are all important considerations before you agree to treat. Be thorough during your interviews and exams — declining to treat is a clinical skill, and it is one of the mistakes new injectors most often learn the hard way.
BOTOX® Cosmetic carries a boxed warning for distant spread of toxin effect. The label states that the effects of BOTOX® Cosmetic and all botulinum toxin products may spread from the area of injection to produce symptoms consistent with botulinum toxin effects. Swallowing and breathing difficulties can be life-threatening, and although the reported cases have generally involved much larger therapeutic doses, patients treated cosmetically must know the symptoms and know to seek help immediately.
Absolute contraindications include known hypersensitivity to any botulinum toxin preparation or to any component of the formulation, and infection at the proposed injection site.
Treat with particular caution, and often not at all in a cosmetic setting, in patients with a peripheral motor neuropathic disease, amyotrophic lateral sclerosis, myasthenia gravis or Lambert-Eaton syndrome, all of which carry a heightened risk of clinically significant systemic effects. Aminoglycoside antibiotics and other agents that interfere with neuromuscular transmission can potentiate the effect of the toxin. Pregnancy and breastfeeding are reasons to defer an elective cosmetic treatment.
Remember that while there are medical reasons to use Botox®, most patients interested in cosmetic injectables are insecure about some aspect of their appearance. It is important to be an empathetic listener and to pay close attention to your patient’s emotional responses to your advice.
If you are too gung-ho, your patient might worry that you agree with their insecurity. If you are too clinical, they are less likely to feel safe placing themselves in your hands. You learned a lot about bedside manner in your clinical training; this is a good moment to revisit it.
This is what your patients will remember more than anything else. It is what they communicate when they review your practice or decide whether to recommend you to friends and family.
It is natural to feel a little out of your depth as you begin performing these procedures on real patients. Use these tips as a guide as you gain experience and grow your practice — and make sure every patient leaves understanding the pre-care and post-care instructions below.
Two developments are worth knowing before your next consultation, because patients are already asking about both.
Platysma prominence was added to the BOTOX® Cosmetic label in 2024, making it the fourth approved aesthetic indication alongside glabellar, lateral canthal and forehead lines. On-label dosing is 26, 31 or 36 Units, selected by severity. If you have been treating platysmal banding off-label, this is now a labeled indication with labeled dosing behind it.
Masseter prominence is not approved yet. Allergan Aesthetics announced on 4 August 2026 that the FDA had accepted a supplemental Biologics License Application for BOTOX® Cosmetic in masseter muscle prominence, which would become its fifth aesthetic indication. Until a decision is issued, masseter Botox® for jawline slimming remains an off-label use in the United States and should be consented and charted as such.
When taking on a patient for treatment there are specific questions that need to be asked to avoid unwanted complications or adverse reactions.
Take a complete medical history to determine whether Botox® is a suitable treatment. You need to know about medical illnesses, diseases and conditions, any previous surgeries or procedures, and specifically about the neuromuscular conditions listed above. Establish whether the patient is pregnant or breastfeeding.
Ask about prescription medication, over-the-counter medication, herbs, supplements and allergies. Two categories need to be handled differently, and conflating them is a genuine risk to the patient:
Cutting down on alcohol in the days leading up to the procedure helps reduce bruising.
With first-time Botox® patients, the IAPAM recommends a thorough examination of the face together with a full discussion of what the patient expects from treatment. This helps decide whether Botox® is the right course of action, since a neuromodulator addresses dynamic lines and can only do so much about static folds, volume loss or skin quality. Brief the patient on the procedure, on realistic timelines — onset over several days, peak effect at roughly two weeks, duration of about three to four months for most products — and on the side effects, so the result lands as expected rather than as a disappointment.
Once Botox® is agreed as the right approach, decide which facial regions to treat. Ask patients what their definition of an ideal result is, because the patient and the practitioner sometimes disagree on it, and your treatment plan needs to align with theirs before a needle comes out.
After the injections, the IAPAM recommends the patient take certain precautions and follow these aftercare instructions. It is worth being honest with patients about which of these rest on firm evidence and which are conservative convention — they will find the conflicting advice online anyway, and the practitioner who explains the difference is the one they trust.
Exercising the treated muscles with natural facial expressions for the first hour is commonly advised, on the theory that active muscle uptake speeds onset. It is harmless and may modestly shorten the time to effect; it is not a requirement for the treatment to work.
Patients should avoid rubbing or massaging the treated areas for several hours after the procedure, so that product is not displaced into adjacent muscles. This one matters — it is the same mechanism behind brow and eyelid ptosis.
Analgesia should rarely be needed. Where a patient wants something for a post-treatment headache, acetaminophen is preferred over aspirin and ibuprofen in the first 24 hours, since those increase bruising. A patient on prescribed aspirin continues to take it as prescribed.
Mild bruising can occur and may last a few days. Let patients know this is normal and can be managed with ice applied to the area. Arnica or vitamin K preparations are sometimes suggested; the evidence for them is weak, so present them as optional rather than necessary.
Chemical peels, microdermabrasion, laser and facial massage should be deferred for at least 24 hours, and many practitioners prefer to wait two weeks, so that manipulation of the treated area cannot displace product and so that any bruising is not compounded.
Strenuous exercise is usually deferred for the rest of the day, and patients are asked not to lie flat or bend forward for about four hours. The rationale is displacement of product, not systemic spread — but patients should still know the boxed-warning symptoms and know to contact you or seek urgent care immediately if they develop difficulty swallowing, speaking or breathing, or generalised muscle weakness, at any point after treatment.
Alcohol is best avoided for the first 24 hours, as it increases bruising and swelling.
Practitioners who take the time to walk their patients through these before-and-after measures get better Botox® results and fewer anxious phone calls — and patients who understood the plan in advance are the ones who come back.
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The BOTOX® Cosmetic label specifies 4 Units into each of 5 sites for a total dose of 20 Units. Higher totals are used in practice, particularly in male patients with larger corrugator and procerus muscles, but anything above 20 Units for the glabellar complex is off-label and should be documented as such in your consent and chart.
The label instructs you to remove the needle used to reconstitute the product and attach a 30–33 gauge needle for injection. Many injectors work at the finer end of that range, using a 31 or 32 gauge insulin-style syringe, because a smaller bore reduces injection discomfort. Use a fresh, single-use needle for every patient.
The label gives two separate margins that are often merged by mistake. Place lateral corrugator injections at least 1 cm above the bony supraorbital ridge, and do not inject closer than 1 cm above the central eyebrow. Respecting both is what keeps product away from the levator palpebrae superioris and reduces the risk of eyelid ptosis.
Administer reconstituted BOTOX® Cosmetic within 24 hours. During that window store the reconstituted vial in a refrigerator at 2–8 °C. Reconstitute with preservative-free 0.9% sodium chloride injection only, and record the reconstitution date and time on the vial.
No. The label is explicit that Units of biological activity of BOTOX® Cosmetic cannot be compared to nor converted into Units of any other botulinum toxin product. Each product has its own potency assay, its own dilution instructions and its own dosing. This is the reason to verify the product identity at preparation, at removal from storage and again immediately before injecting.
Patients may reasonably pause elective over-the-counter agents that increase bruising — aspirin taken for no medical indication, ibuprofen, vitamin E, fish oil, ginseng and ginkgo biloba — for about a week beforehand. Prescribed anticoagulant and antiplatelet therapy is different: never instruct a patient to stop a prescribed blood thinner. That decision belongs to the prescribing physician, and the bruising risk is far smaller than the thrombotic risk of stopping.
Not yet. Masseter injection for jawline slimming is currently an off-label use in the United States. Allergan Aesthetics announced on 4 August 2026 that the FDA had accepted a supplemental Biologics License Application for BOTOX® Cosmetic in masseter muscle prominence, which would be its fifth aesthetic indication. Until an approval is issued, treat and document masseter treatment as off-label.
Every tip on this list comes back to the same thing: confident injecting is knowing the labeled numbers cold, knowing exactly where you are departing from them and why, and having said all of it out loud to the patient before you start. Anatomy and dosing you can study. Judgement, hand position and the feel of a corrugator under a 32 gauge needle you have to build on real faces, with someone experienced standing next to you.
That is what the IAPAM’s hands-on Botox® training is for — four days in a working Scottsdale clinic, live models, board-certified instructors, and AMA PRA Category 1 CME. Twenty years, 15,000-plus providers trained, and 4.9 out of 5 across more than 6,300 reviews.
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Disclaimer: This guide is for informational and educational purposes only and does not constitute medical advice. Treatment plans, injection techniques, and dosing must be tailored to each patient by a qualified, licensed provider. Always follow product labeling, your scope of practice, and your state medical and nursing board regulations. Botox® is a registered trademark of Allergan, Inc., an AbbVie company; Dysport® is a registered trademark of Ipsen; Xeomin® is a registered trademark of Merz Aesthetics; Jeuveau® is a registered trademark of Evolus; Daxxify® is a registered trademark of Revance Therapeutics; Letybo® is a registered trademark of Hugel.
The history of Botox® began when a toxin called Botulin was first discovered connected to a very rare form of a paralytic illness.
Starting an aesthetic practice can feel overwhelming — but it doesn’t have to be. These four essential pillars will guide you toward building a successful, independent, and sustainable aesthetic practice with confidence.
New to injecting Botox®? This guide walks you through the most common mistakes—and how to avoid them—so you can deliver safe, natural-looking results your patients will love.
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