Botox and Other Neurotoxins

Botox is the most performed cosmetic procedure in the world. Millions of treatments happen every year. It's been FDA-approved for cosmetic use since 2002, and approved for various medical uses since the late 1980s. We have decades of safety data and a level of clinical experience that few procedures can match.

It's also one of the most misunderstood procedures I encounter. Patients come in convinced Botox will freeze their face, change their personality, or make them unrecognizable. Other patients come in expecting it to lift everything, smooth everything, and turn back the clock. The reality is somewhere in the middle, and the difference between a good result and a bad one is almost entirely about who's holding the needle.

Let's break this down.

What Botox Actually Is

Botox is a brand name. The active ingredient is botulinum toxin type A, a neurotoxin produced by the bacterium Clostridium botulinum. When injected in tiny, purified doses into specific muscles, it temporarily blocks the signal between the nerve and the muscle, preventing that muscle from contracting.

That's the entire mechanism. No movement in the targeted muscle for a few months.

There are several FDA-approved neurotoxin products available in the US, all of which work the same general way but with slight differences:

Botox (onabotulinumtoxinA). The original. Made by Allergan. The most studied and most familiar to providers and patients.

Dysport (abobotulinumtoxinA). Made by Galderma. Tends to spread slightly more than Botox, which can be useful for treating broader areas like the forehead but requires careful injection. Often kicks in slightly faster (two to three days versus four to seven for Botox).

Xeomin (incobotulinumtoxinA). Made by Merz. Often called "naked Botox" because it doesn't contain the accessory proteins the others do. Some providers prefer it for patients who've developed resistance to other toxins.

Jeuveau (prabotulinumtoxinA). Made by Evolus. A newer entry, sometimes called "Newtox." Generally comparable to Botox for cosmetic use.

Daxxify (daxibotulinumtoxinA). Made by Revance. The newest major addition. Marketed for longer duration, sometimes lasting four to six months instead of three to four. Costs more per treatment.

Which one is best? It depends. Each has slight advantages and disadvantages. A good injector usually has a preference based on their experience and the specific area being treated. None of them are dramatically different in the hands of a skilled provider. If a clinic uses several, ask which one they recommend for your specific concern and why.

What about the imported, off-label, or unbranded toxin you might see advertised cheaply? Don't. Counterfeit and off-brand botulinum toxins exist, particularly in the gray market. They've been linked to serious complications. If a provider can't tell you exactly which FDA-approved product they're using, walk out.

What Botox Can Do

Botox treats dynamic wrinkles. These are the lines that appear when you move your face. The horizontal lines across your forehead when you raise your eyebrows. The vertical lines between your brows when you frown (the "elevens"). The crow's feet at the corners of your eyes when you smile. Lines around the mouth and chin from various expressions.

By preventing the muscles from contracting fully, Botox prevents those dynamic lines from creasing. Over time, this also softens the static lines (the ones that show even when your face is at rest) because the muscle isn't actively folding the skin in that location.

Beyond the classic three areas (forehead, frown lines, crow's feet), Botox is also used for:

Bunny lines. The wrinkles that scrunch across the bridge of the nose when you make certain expressions.

Brow lift. Strategic placement can subtly elevate the eyebrow tail, opening up the eye area.

Lip flip. A few units injected at the top edge of the upper lip relaxes the muscle that pulls the lip down, causing the upper lip to roll out slightly. Gives the appearance of a fuller lip without filler.

Gummy smile. Treatment of the muscles that pull the upper lip too high when smiling, reducing visible gum.

Chin dimpling. The cobblestone or orange-peel texture that some chins develop with movement.

Neck bands (platysmal bands). Treatment of the vertical bands that become prominent in the neck with age.

Masseter treatment. Injecting the chewing muscles to reduce their size, which can slim the face along the jawline and reduce TMJ symptoms. This one has a longer treatment timeline, with results developing over months.

Hyperhidrosis. Excessive sweating in the underarms, palms, or feet. Not cosmetic technically, but a real medical use that genuinely improves quality of life.

Migraines, TMJ pain, bruxism, certain neurological conditions. Medical uses of Botox that often overlap with my aesthetics practice because the same anatomy is being targeted.

What Botox Can't Do

This is where expectations need to be managed carefully.

Botox does not change the texture of your skin. It does not improve sun damage, pore size, or skin quality in general. If your skin issues are mostly about texture, pigmentation, or roughness, Botox is not the answer. You need lasers, retinoids, or other texture-focused interventions.

Botox does not fill volume. The hollow under-eye area, the deflated cheek, the thin lips. None of these get fixed by Botox. They need fillers or other volumizing approaches.

Botox does not lift significantly. There's some modest lift available from strategic Botox placement, but if you have substantial skin laxity or sagging, Botox is not going to address that. You need different procedures, or surgery.

Botox does not erase deep, etched lines that have been there for decades. It softens them over time, but the lines that have folded the skin into permanent creases for twenty years aren't going to disappear from a Botox treatment.

Botox does not last forever. It wears off. Three to four months for most patients with most products, sometimes longer with Daxxify, sometimes shorter in patients with high metabolic rates or those who use the treated muscles intensively.

What Good Botox Looks Like

This is the section I want every patient to read before their first appointment.

Good Botox looks like a slightly more rested, slightly less worried version of you. Your forehead is softer when you make expressions, but not motionless. You can still raise your eyebrows. You can still furrow your brow slightly. Your face still moves, communicates, and expresses emotion. You just look less tired, less angry, less aged.

Good Botox is invisible to people who don't know you got it. Your friend at brunch doesn't say "you look so different." They say "you look great, are you sleeping more?" The result is subtle. The person looking back at you in the mirror is recognizably you, just refreshed.

Good Botox respects facial proportion and movement. The muscles in your face work together. A good injector treats certain muscles while preserving the function of others to maintain balance. They don't just freeze everything they can reach.

What Bad Botox Looks Like

The frozen forehead. The famously immobile celebrity face where the upper third of the face doesn't move at all. This is what people fear when they say they don't want Botox. It's the result of too much product injected too aggressively, often in the wrong places.

The Spock brow. The arched, surprised-looking eyebrow that happens when only the central forehead is treated and the lateral fibers compensate by overshooting upward. A skilled injector either avoids this by treating the lateral forehead too, or by adjusting placement to prevent it. An inexperienced injector creates this look and then has to chase it with more product.

The heavy brow. The droopy, hooded look that happens when too much Botox is placed in the forehead without considering the patient's anatomy. The forehead muscles were helping to hold the brow up. Now they can't. The brow descends. Ptosis (a dropped eyelid) is a more severe version of this, where the upper eyelid itself drops noticeably. This is often a true complication, not just an aesthetic miss, and it can take three to four months to resolve as the Botox wears off.

The flat smile. When too much Botox is placed in the crow's feet area or extends too far down, it can affect the muscles that lift the cheek when smiling. The smile loses its natural lift. The face looks somehow off, even though you can't quite pinpoint why.

The asymmetric face. When one side is overtreated relative to the other, or when an inexperienced injector treats both sides identically without accounting for natural asymmetries (we're all asymmetric to some degree), the result can be unbalanced.

What to Expect at Your Appointment

Your first Botox appointment should include a real consultation. The injector should examine your face at rest and in motion. They should ask about your goals, your history, your concerns. They should explain what they're recommending and why, and how many units they plan to use in each area.

Then the actual procedure is fast. Five to ten minutes for most treatments. The injections themselves are small needles, brief pinches in the targeted areas. Most patients find it tolerable without numbing cream, though some clinics offer it.

You may have small bumps at the injection sites that fade within an hour. Some bruising is possible, particularly in the crow's feet area. Most patients have no significant downtime.

Aftercare instructions vary slightly by provider but typically include:

Don't massage or press on the treated areas for several hours.

Avoid lying flat for four hours after treatment.

Skip strenuous exercise for the rest of the day.

Avoid alcohol for 24 hours (it increases bruising risk).

Don't do facials, lasers, or other treatments for at least a week.

You'll start to see effects in 2 to 7 days, with full results around 14 days. If you notice anything that seems wrong (significant asymmetry, drooping, unexpected effects), call your provider. Most can be addressed with touch-up treatment.

How Much Botox Do You Need?

This depends on:

Your anatomy. People with stronger muscles need more units. Men typically need more than women because facial muscles are larger and stronger.

The area being treated. The forehead might take 10 to 20 units. The frown lines (glabella) typically 20 to 30. Crow's feet, 8 to 12 per side. Masseters, 20 to 40 per side.

Your goals. Subtle softening versus full muscle paralysis. Most patients should aim for somewhere in the middle.

Your treatment history. Patients who've been getting Botox for years sometimes need slightly less over time as muscles atrophy. Some patients build resistance and need more.

A first-time treatment for the classic upper-face areas (forehead, glabella, crow's feet) often runs 40 to 60 units total. At $12 to $18 per unit, that's $500 to $1,100, give or take.

Be skeptical of providers quoting dramatically lower unit counts to make the price look better. If you actually need 50 units and they're using 25, you'll either not see the effect, or you'll see it for half as long. The math on neurotoxin economics is real.

When to Start Botox

This is one of the most contested questions in aesthetics.

The "preventative Botox" approach argues that starting Botox in your twenties, before deep lines form, prevents wrinkles from ever fully developing. There's some logic to this. Lines that never crease can't permanently fold the skin.

The "wait until you need it" approach argues that starting too young exposes you to decades of treatment, costs, and small risks for a problem you didn't yet have.

My honest view: there's no universal answer.

If you're in your early twenties with no visible lines, even when expressing strongly, you probably don't need Botox yet. Save your money. Use sunscreen and retinoids and let your face do what it's doing.

If you're in your mid-to-late twenties or early thirties and you're starting to see fine lines that don't fully bounce back when you stop expressing, a small amount of Botox might be reasonable. Two units in one area, used carefully, is very different from a full-face treatment.

If you're in your thirties and beyond and you have visible lines you want to address, Botox is a well-established option.

What concerns me is people who don't need Botox getting talked into it because the provider profits from selling it, or because they see it as a default. The treatment exists. It's not inherently bad. It's also not the right answer for every concern at every age.

I also want to push back on the "preventative Botox" marketing as a universal prescription. The data supporting it is not as strong as the messaging implies. Yes, paralyzed muscles can't create lines. But there are tradeoffs too, including the cost over decades, the small but real risks of repeated injections, and the cumulative impact of years of altered facial movement on the muscles themselves. We don't fully know the long-term implications of starting Botox at twenty-three and continuing it until eighty.

If you're considering preventative Botox, do it because you've thought it through carefully, not because someone sold you on it.

Side Effects and Risks

The most common side effects are mild and resolve quickly:

Bruising at injection sites. Usually small. More common in the crow's feet area.

Headache for a day or two after treatment. Common with first treatments, often less so afterward.

Bumps at injection sites that resolve within hours.

Mild flu-like feeling that lasts a day or two.

The less common but more significant complications:

Eyelid ptosis. A dropped upper eyelid from the Botox migrating to nearby muscles. Resolves as the product wears off, but takes weeks to months. There are some prescription eye drops (apraclonidine) that can offer partial improvement during recovery.

Brow ptosis. A heavy, dropped brow from overtreatment of the forehead. Same situation, resolves with time.

Asymmetric results. Sometimes correctable with a small touch-up. Sometimes you wait for it to wear off.

Resistance to Botox. Rare, but some patients develop antibodies that reduce or eliminate the response to certain neurotoxin formulations. Switching to a different brand (often Xeomin, which has fewer accessory proteins) can sometimes restore response.

Allergic reaction. Rare with current formulations.

Systemic spread. Extremely rare with cosmetic dosing. More of a concern with the much higher doses used for some medical conditions.

In experienced hands, with appropriate dosing, Botox is one of the safest cosmetic procedures available. The complications are almost always either minor or temporary. The serious complications are rare and usually involve either inexperienced injection or counterfeit product.

A Final Note on Botox

If you decide to do Botox, do it for you. Not because your partner thinks you'd look better. Not because Instagram showed you a filter that made you feel insecure. Not because your sister got it and the family has decided this is what you do at forty.

Do it because you've thought about it, you understand what it can and can't do, and you've decided this is something that aligns with how you want to look and feel.

And then find a great injector. Pay for skill. Start with less than you think you need. Add more if you want it after you see the result settle. You can always do more. It's much harder to undo more than you wanted.

The next chapter is the other half of the injectables conversation: dermal fillers. The procedure with the highest reward when done well and the most risk when done badly. Read it carefully before you ever sit down for filler.