Not My Face.

Botox is botulinum toxin Type A — one of the most lethal substances known to science. One gram of it could kill roughly a million people. The cosmetic dose is small, but the marketing rarely tells you what happens when “small” doesn’t stay small.

To this day, most batches of Botox and its competitors are still tested using the LD50 method — botulinum toxin injected into hundreds of live mice per batch until half of them die from paralysis and suffocation. This is the standard testing protocol, repeated for every commercial release, and it’s rarely part of the cruelty-free skincare conversation.

Botulinum toxin also doesn’t always stay where it’s injected. Research has documented its movement through nerves via retrograde transport — meaning the toxin can travel away from the injection site, back up the nerve toward the cell body, and into the central nervous system. Animal studies have found broken-down SNAP-25 — the brain signaling protein botox disrupts — in the brainstem after cosmetic-dose exposure. Brain imaging studies have shown changes in brain activity after Botox injections, suggesting the effect isn’t purely local. The FDA quietly issued a boxed warning in 2009 for systemic spread of the toxin. Most patients are never told about it.

There’s an emotional dimension too. Multiple peer-reviewed studies (PMC2880828, PMC4332022, PMC9971043) have shown that botulinum toxin alters amygdala responses to emotional faces and can dampen emotional experience. The facial feedback hypothesis — the idea that facial movement helps the brain process emotion, not just display it — has a growing body of literature behind it. When you can’t move your face, you may also feel less of what others around you are feeling. The field is debated, but the conversation itself is real science.

The horror stories are not as rare as the industry implies. The CDC has documented multiple clusters of iatrogenic botulism — “Botox poisoning” — from cosmetic Botox in recent years. People hospitalized, intubated, ventilated. Angelika Jones got Botox in August 2022. The toxin spread systemically and paralyzed her swallowing muscles. Years later she still cannot eat. She lives on a feeding tube. The CDC declined to offer her antitoxin. Her story is documented on @nevertox, and she is not the exception. Between that account and @botoxandfillersideeffects — where injured people document what came after their treatments — there is a quiet archive of what the industry doesn’t talk about.

Then there are the questions practitioners don’t ask before injecting. Anyone with active or suspected autoimmunity — Hashimoto’s, elevated thyroid antibodies, unexplained immune reactivity — is sitting in a different risk category. The bacteria botox is made from (C. botulinum) shows up on the same list as H. pylori and EBV as one of the triggers that can confuse an immune system already mistaking thyroid tissue for an invader. People with chronic fatigue, ME/CFS, or mitochondrial issues are particularly vulnerable to the cumulative muscle thinning and scarring injections drive over time. The “frozen look” that develops slowly over years isn’t aesthetic drift — it’s tissue that’s been permanently restructured. Anyone with a pre-existing neurological condition — MS, ALS, Guillain-Barré — needs to talk to their neurologist before doing anything, not their injector. Pregnancy and active conception isn’t a risk-benefit conversation, it’s a pause one. There is zero human data on what cosmetic-dose botox does to a fetus. And anyone already carrying a high cosmetic load — implants, fillers, repeated chemical exposure — is adding one more neurotoxin to a system already running on overload.

What Botox does to the face over time isn’t visible in the before-and-afters either. Muscles that don’t move atrophy. The bone underneath those muscles loses density. The face that’s frozen at 40 hollows out by 55 — flatter, more skeletal, harder to soften. Repeated over years, Botox often accelerates the same structural aging it was meant to prevent.

I’m not telling anyone never. I am saying: know what you’re injecting, into what kind of body, and what the evidence — including the parts the industry doesn’t bring up — actually shows. Most people aren’t given that chance before their first appointment.

Hyaluronic acid filler doesn’t reliably stay where it’s injected, and it doesn’t reliably dissolve. Recent MRI studies have confirmed that years after injection, sometimes a decade later, filler still appears in places no one ever treated — under the eyes, in the upper lip, throughout the cheek hollows. The puffy, distorted look that has become recognizable in heavily filled faces is the result of years of filler gradually migrating and accumulating throughout the face.

Even “dissolvable” filler doesn’t dissolve cleanly. The body wraps every deposit in scar tissue, the way it treats any foreign object it can’t break down. With each round of injections that scar tissue becomes more disorganized and harder to dissolve, gradually changing the underlying structure of the face. Filler also keeps the immune system busy — immune cells stay activated for years trying to wall off something the body keeps reading as foreign. Tissue that was meant to relax ends up in a chronic low-grade defense mode.

The complications go well beyond aesthetics. Filler accidentally injected into a blood vessel can starve the surrounding tissue, and in rare cases cause blindness when arteries near the eye are involved. Infections at injection sites — including the kind that form stubborn bacterial mats the body can’t clear on its own — have led to disfiguring abscesses that needed to be surgically drained. Delayed lumps and bumps appearing years after injection, sometimes triggered by an unrelated infection, dental work, or vaccine, are increasingly documented.

And the systemic question no one has answered: when does it actually leave the body? There are no peer-reviewed studies on the long-term clearance of cosmetic fillers. Most injured patients have been carrying symptoms for years past their treatment date with no clear path to resolution. @botoxandfillersideeffects documents an archive of stories the marketing won’t reference.

This also makes any future facelift significantly more difficult. Surgeons are increasingly refusing — or charging considerably more — to operate on heavily filled faces. The tissue planes they rely on are scarred and disrupted, surgical landmarks disappear, and results become unpredictable. Some of the most respected surgeons in the field now publicly warn against the practice.

PDO and PLLA threads are usually marketed as a no-downtime “lunchtime lift,” and the actual list of what can go wrong is long. Threads visible under the skin, lumps along the jaw, one side dissolving before the other, broken pieces that migrate, infections that end with surgery — all things that have actually happened, in numbers no one is sharing in their before-and-afters. The scaffolding doesn’t always dissolve as cleanly as advertised.

Sculptra is poly-L-lactic acid (PLLA), sold as a “collagen biostimulator” rather than a traditional filler. What’s actually being sold is a slow, controlled scarring process — dressed up as rejuvenation.

The mechanism is the case against it. PLLA particles aren’t doing anything rejuvenating on their own. What “stimulates collagen” is the body recognizing the particles as foreign and walling them off with scar tissue. The volume that appears in the cheek six months later isn’t really new collagen — it’s that wall. You’re paying to install controlled scar tissue.

This is also why Sculptra can’t be dissolved. The enzyme that breaks down HA filler doesn’t touch PLLA, and there is nothing else FDA-approved that does. Once it’s in, the options for complications are steroid injections, anti-scarring drug injections, or surgery — none of them clean. People who run into trouble usually spend years managing it.

The signature complication is lumps and bumps that show up late — sometimes weeks, sometimes months, sometimes years after the last session. They’re known to be triggered by unrelated immune events: a bad flu, a dental procedure, a vaccine, covid, hormonal shifts. The medical literature has cases of bumps appearing 2, 3, even 5+ years after the original treatment. Most patients aren’t warned this is the actual long-tail risk.

Outcomes are also famously unpredictable because they depend on how each person’s immune system responds. Same dose, same injector — one person gets soft, natural-looking volume, another ends up with hard, bumpy cheeks. There’s no way to know in advance which one you’ll be.

And the volume that does build is structural, not soft. It’s tissue scarring that stays long after the PLLA itself has broken down — because the architecture it created is still there.

For anyone with autoimmunity, Hashimoto’s, mast cell issues, or any condition where the immune system is already on high alert, choosing a treatment that depends on repeatedly provoking that system is hard to argue for at all.

Kybella is deoxycholic acid injected into fat — usually under the chin, though it’s now used off-label in jowls, buccal areas, and elsewhere. What’s actually being sold is chemical destruction of your own tissue. The acid breaks apart fat cell membranes, kills them, and the body clears the debris over the following weeks. That fat is gone. Permanently.

The pitch is: sculpt your jawline without surgery. What isn’t part of the pitch is that fat in the face is not a design flaw. It’s youth. The fullness under the chin and along the jaw softens with age on everyone — and destroying it in your thirties or forties gives you a sharper line now at the cost of a hollowed, aged look in a decade. Once it’s gone, the only way to put volume back is more injectables, more filler, more procedures. A permanent loss that creates a permanent dependence.

The neck is also not a casual injection zone. It’s dense with nerves, lymph nodes, and vascular structures. Documented complications include nerve damage causing lopsided smiles that don’t always recover, difficulty swallowing, prolonged swelling, and hardening of the tissue. Any acid strong enough to dissolve fat cells is strong enough to damage the nerves running through the same area.

And the mechanism matters. You are injecting a compound whose entire job is to destroy cellular tissue into an area rich with nerves that regulate speech, expression, and swallowing. The idea that this could reliably kill only the fat you don’t want, and leave everything else untouched, requires more faith than the evidence supports.

Morpheus 8 uses radiofrequency delivered at depths that reach the subcutaneous fat pads of the face. Those fat pads are exactly what gives a face its young, soft, dimensional appearance, and when they atrophy from heat damage the result is a gaunter, more skeletal, visibly older face. The treatment is marketed as collagen stimulation, but what many people end up with is permanent volume loss in the cheeks, temples, and around the mouth — particularly in thinner or more mature faces where there is the least margin to spare. There is no reversal for fat pads that have been thermally destroyed.

The other problem is what it can leave on the surface. The device works through a grid of fine needles, and on some people that grid prints itself permanently into the skin — visible tracks and box-shaped scarring that don’t fade. Plenty of people have come forward describing exactly this: faces marked by the device’s own pattern long after the treatment was supposed to have healed.

This is the one that’s hardest to talk about, because it’s the one nearly every dermatologist in the world will tell you is the gold standard. It’s prescribed to teenagers and grandmothers alike, sold as anti-aging’s single most evidence-backed ingredient. I used it for years myself. What no one told me was what it was actually doing underneath.

Prescription tretinoin works by pushing skin turnover and remodeling much faster than it would happen on its own. In the process, it can disrupt the outer barrier — which is why the peeling, dryness, burning, sensitivity and that constantly tight feeling are so common, especially when you first start using it or push it too hard. And that matters to me, because your barrier isn’t just the surface of your skin. It’s what keeps water in, irritants out, and your skin functioning like skin.

It also changes pigmentation. Retinoids can reduce visible melanin by speeding the turnover of pigmented cells and interfering with parts of the pigmentation process — one of the reasons they’re used for melasma and dark spots. That can absolutely be useful. But melanin also happens to be part of the skin’s own natural defense against UV, and I’ve never loved the idea of aggressively chasing less pigment while becoming more dependent on protecting increasingly reactive skin from the sun.

The full picture is closer to this: you thin the barrier, suppress the built-in UV defense, dry out the skin, inflame it, and then rely on an ever-expanding routine of moisturizers, serums, and SPFs to manage the fallout. Then when you stop, the skin is often worse than when you started — because you’ve spent years training it not to do its own work.

There are gentler ways to encourage cell turnover that don’t come with barrier damage. Bakuchiol, peptides, red light therapy, exfoliating enzymes, gentle acids used sparingly. They’re not marketed as aggressively because they’re not patentable in the same way. But they work, and they don’t come with the cost.

Chemical peels are called “resurfacing,” which sounds a lot gentler than what’s actually happening. You’re deliberately creating a chemical injury in the skin, then relying on the healing response to rebuild what was damaged. The deeper the peel, the deeper the injury.

I’m not anti-exfoliation. A light glycolic, lactic or enzyme treatment once in a while on healthy skin is a completely different conversation. What I personally stay away from are the medium and deep peels — stronger TCA, phenol, aggressive Jessner combinations and repeated resurfacing treatments where significant inflammation and injury are part of the point.

That distinction matters. Medium and deep peels reach beyond the very surface of the skin, and the risks go up with the depth: prolonged redness, persistent sensitivity, pigment changes, infection and scarring. Deep phenol peels are in another category entirely — phenol can be absorbed through the skin and can affect the heart, which is why cardiac monitoring may actually be used during treatment.

Pigment is another reason I’m cautious. Any significant injury to the skin can trigger post-inflammatory hyperpigmentation, and that risk becomes especially important in darker skin tones or anyone already prone to pigmentation. In some cases you can also lose pigment rather than gain it. So you may go in trying to fix discoloration and end up managing a completely new pigment problem afterward.

And this is where I personally question the whole controlled-damage approach. Yes, the body can respond to injury by laying down new collagen. That’s exactly why these treatments can work. But I don’t automatically believe that repeatedly injuring healthy skin is the best long-term strategy just because it produces a short-term remodeling response.

I’d rather work with the skin than keep forcing it to recover from me.

Enzymes. Gentle acids when they actually make sense. Peptides. Red light. Supporting the barrier instead of constantly stripping it back. You can encourage healthier-looking skin without making every treatment a recovery project.