All four products are botulinum toxin type A. They relax the specific muscles that fold skin into expression lines. Differences between them come down to onset, spread, and duration rather than mechanism. Results appear over three to seven days and typically last three to four months, with some patients seeing longer from DAXXIFY®.
Are Botox®, Dysport®, DAXXIFY® and Jeuveau® actually different, or is it marketing?
They are genuinely different formulations of the same class of molecule, and the differences are real but modest.
Botox®, onabotulinumtoxinA, is the longest studied and the reference point everyone else is compared against. Predictable, well characterized, and the product most injectors have the deepest dosing intuition for.
Dysport®, abobotulinumtoxinA, uses a different unit scale, so a Dysport® unit and a Botox® unit are not interchangeable numbers. Roughly two and a half to three Dysport® units correspond to one Botox® unit, which is why a Dysport® treatment sounds like a much larger dose. It tends to have a slightly faster onset, often two to three days, and it spreads a little more in the tissue. That spread is an advantage across a broad forehead and a disadvantage in a small precise area near the brow.
DAXXIFY®, daxibotulinumtoxinA, is stabilized with a peptide rather than human serum albumin, and studies have reported longer duration in a subset of patients, in the range of six months. Not everyone gets that. It is worth trying if your results consistently fade at ten weeks.
Jeuveau®, prabotulinumtoxinA, is formulated specifically for aesthetic use and behaves very similarly to Botox® in practice.
Our injectors will often keep a patient on whichever product has historically performed best for them rather than switching for its own sake. If you have had an unsatisfying experience with one, saying so is useful information, not a complaint.
How many units will I need?
Enough to relax the muscle, which depends on the muscle, not on your age or a package price.
The three standard upper face areas behave differently. The glabella, the frown lines between the brows, is driven by the corrugator and procerus muscles, which are thick and strong. It generally requires the largest dose of the three. The forehead is the frontalis, a broad thin sheet, and it requires less than people assume, because the frontalis is also the only muscle lifting your brow. Crow’s feet come from the orbicularis oculi, a delicate circular muscle around the eye, and they take small precise amounts placed superficially.
Individual variables move the number substantially. Men typically need more than women because of greater muscle mass. Someone who has never been treated usually needs more than someone maintaining a long standing result, because chronically relaxed muscles gradually weaken. A very expressive patient with deep etched lines will need more, and may also need to accept that lines already etched into the skin at rest will soften rather than disappear.
A first treatment is a starting estimate. We bring you back at two weeks to look at the result in motion, and if an area needs a small addition we do it then. That two week check is not a sign something went wrong. It is how good dosing gets calibrated, and it is far better than overdosing on day one and waiting three months.
Why did my last treatment wear off after six weeks?
Several possibilities, and they are worth sorting through rather than assuming you are resistant to the product.
The most common reason is underdosing. If the muscle was only partially relaxed, movement returns sooner because it never fully stopped. This is frequent when a patient is treated to a budget rather than to the muscle.
The second is metabolism and muscle mass. Patients with strong facial muscles and high metabolic rates, including many athletes, genuinely clear the product faster. If that describes you, a longer duration formulation is a reasonable experiment.
The third is what you are measuring. Neurotoxin effect does not stop like a switch. It tapers. Patients often report it wore off at six weeks when what actually happened is they detected the first millimeter of returning movement. Full return of function is a different point on the curve than first detectable movement.
The fourth, and it is uncommon, is antibody formation. Repeated frequent high dose exposure can in rare cases produce neutralizing antibodies. This is another reason not to chase touch ups every four weeks.
The fifth is product handling. Reconstitution, storage, and time from mixing to injection all matter. This is one of several reasons to be treated in a medical practice rather than at a pop up event.
Tell your injector the specific timeline you experienced. Six weeks and twelve weeks lead to completely different adjustments.
Will I look frozen, and does preventative treatment make sense in my thirties?
Frozen is a dosing and placement outcome, not an inevitable property of the product. The mistake is treating every muscle to full paralysis, particularly the frontalis, which is the only muscle that raises your brow. Fully shut it down and the brow settles heavier, the upper lid looks hooded, and the face loses its ability to signal.
The better approach is selective. Relax the depressor muscles that pull the brow down harder than the ones lifting it, dose the forehead conservatively, and leave enough movement that your face still communicates. Most patients who say they want to look natural are describing this, not a smaller dose across the board.
On preventative treatment. The rationale is straightforward. Expression lines start as dynamic, meaning visible only when you move. Over years of repeated folding, they become static, etched into the skin at rest. Reducing the folding during the dynamic phase delays the transition to static. That is well reasoned, and it is why many patients start in their late twenties or thirties.
The caveat is that preventative does not mean maximal. Someone with no lines at rest needs light dosing at sensible intervals, not a full treatment every twelve weeks forever. Over-treating young frontalis muscles for years causes them to atrophy, which is not an outcome anyone was aiming for.
If you have no lines at rest and only faint ones with expression, a conservative starting dose is reasonable. If you have no lines at all in either state, waiting is also reasonable.
What about eyelid droop? That is the thing I am most afraid of.
It is the complication patients ask about most and it is uncommon.
True ptosis, a drooping upper eyelid, happens when product migrates through the orbital septum and affects the levator palpebrae superioris, the muscle that opens your eye. It is a placement and diffusion issue. Injecting too low or too medially near the brow, using too large a volume, or aggressive rubbing of the area afterward all raise the risk.
Brow heaviness is a different and more common thing that patients often call droop. That is the frontalis being over-relaxed so the brow sits lower. It is not eyelid ptosis and it responds to adjusted dosing next time.
Both are temporary. They resolve as the product wears off, generally over weeks rather than months. Prescription eye drops can partially lift the lid in the interim for true ptosis, and your injector can discuss that.
Prevention is technique. Correct depth, correct distance above the orbital rim, appropriate volume per injection point, and an injector who understands where the septum sits in your particular anatomy.
Your part is the aftercare. Do not rub, massage, or apply pressure to the treated area for the rest of the day. Do not get a facial that afternoon. Stay upright for about four hours. Skip a hard workout that day, and given Fresno summer heat, skip the sauna, the hot tub, and prolonged sun that day as well. Heat and vasodilation are not helpful in the first several hours.
Do I need Botox® or filler? I cannot tell which problem I have.
Simple test. Look in the mirror with a completely relaxed face. Then make the expression that creates the line you dislike.
If the line only appears when you move, it is a muscle problem and neurotoxin is the tool. That covers frown lines, forehead lines, and crow’s feet.
If the line is there when your face is completely still, it is a volume or structural problem, and filler, collagen stimulation, or resurfacing is the tool. That covers deep nasolabial folds, hollow tear troughs, flat cheeks, and a soft jawline.
If it is faintly there at rest and much worse with movement, which is very common, it is both. In practice we often treat the muscle first, let the skin have several weeks without repeated folding, and reassess. A meaningful number of patients need less filler than they expected once the muscle stops working against the area.
There is also a third category people miss entirely. Some lines are surface texture, not muscle or volume. Fine crepey lines under the eyes and around the mouth respond to microneedling, peels, and consistent medical grade skincare, and injecting them is the wrong answer.
Our injectors will tell you when the honest recommendation is fewer injections rather than more, and when the right referral is to Dr. Mafi for a surgical conversation instead.
Injectable treatments at Mafi Plastic Surgery are performed by Jessica Massed, FNP and Justine Kinzel-Eckman, FNP, under the medical direction of Parham Mafi, MD, FACS, board certified by the American Board of Plastic Surgery.
This article is general education about botulinum toxin treatment and is not individual medical advice. Neurotoxins are prescription products and candidacy is determined at consultation. Call (559) 890-6500.