"It feels like it's coming back after about three months. Is it usually like this?"
"My friend said theirs lasted half a year, so why was mine so short?"
This is what people who have tried Botox once ask most often ahead of their second session.
Hello, I'm Kwon Si-jin, the director preparing to practise here in Myeongdong ^^
We're getting ready to open our doors in Myeongdong shortly, and with this question coming up so often ahead of opening, let me set it out for your information first.
Botox usually lasts three to four months. It is not that the medication suddenly disappears; it is simply around that time that the muscles begin to move again.
The reasons why duration varies from person to person, as well as what to check first when it seems shorter, are different for everyone.Let me explain these points clearly.
Why three to four months?
Botulinum toxin temporarily blocks the signal telling a muscle to move.
A little deeper: it's described as blocking the release of the transmitter that crosses from the nerve ending to the muscle. It doesn't remove the muscle — it disconnects the link for a while.
The body rebuilds that link.New nerve branches grow and reconnect with the muscle, and the original movement returns.
That recovery takes roughly three to four months, which is the range the duration is discussed in.
How the effect appears
- 2 to 3 daysthe sense of the strength easing begins
- 1 to 2 weeksthe clearest period. It's more accurate to judge it now
- 3 to 4 monthsthe original movement gradually returns
Feeling that "nothing much has changed" the next day is natural — it isn't the point at which it shows.
So it's worth booking a follow-up at around two weeks. Any imbalance or shortfall can be touched up then.
The duration differs by area
Even with the same Botox, the duration divides with where it's used.
- Lines (forehead, glabella, around the eyes) — areas of frequent expression, so three to four months is what's discussed
- Jaw — the chewing muscle is large and strong, so it's generally mentioned as lasting longer
- Salivary glands — six months to a year is sometimes mentioned
- Placed shallow in the skin — spread shallowly through the dermis, this is generally given as two to three months
So for "how many months does Botox last?", which area has to come first for the answer to line up.
There are several products — what's the difference?
Botox is a case of one company's product name settling into use as a generic term. In fact there are several products using the ingredient botulinum toxin.
Broadly, there are imported products with long use and extensive clinical data, and domestic products at more accessible price points.
One important point here: units don't convert one-to-one between products. The same "so many units" can act differently if the product differs.
So if you switch product and take the same number as last time, it isn't strange for the result to change. It's also the most commonly missed point when duration feels shorter.
Hearing all three in consultation — "which product, how many units, where" — gives you a basis for comparison next time.
The treatment is short, but placement is everything
The treatment is generally over in about ten minutes.With almost no downtime, many people go straight back to their day.
That makes it seem simple, but what actually decides the result isn't the time — it's which muscle, and how much.
Expressions looking unnatural generally comes from here too.Spread beyond the intended muscle into a neighbouring one and strength drops where you didn't want it. Placing deep what should sit shallow does the same.
You'll be advised not to lie down and not to rub the treated area on the day — that's the same reason.It stops it spreading before it settles.
Why it differs between people
The reasons the duration differs at the same dose are generally these.
- Areaas above, muscles differ in size and use
- Doseless than needed and it feels short
- Habitsclenching, or using expressions strongly, change the experience
- Muscle thicknessa naturally developed muscle responds differently to the same amount
If yours has shortened, look here first
"It used to last four months; now it's two."
Tolerance comes to mind immediately at this point, but in most cases there's another reason.
- The dose was lower than last time
- The injection points were different
- The muscle has built back up
- The product changed but the same number was used
Units don't convert one-to-one between products, so the same number can act differently.
A case where it never worked and a case where it worked and then tapered off have different causes.Bringing the product name, dose and date of your last treatment lets a consultation separate them far more accurately.
What "tolerance" actually means
Toxin preparations sometimes contain protein alongside the active ingredient, and there's an explanation that the effect can drop if the body forms antibodies to that part.
Since tolerance has come up, let me go a little deeper.
Which is why two things come up commonly.One is keeping to the interval; the other is not raising the dose beyond what's needed. That's the reason an interval of three months or more is advised.
That said, antibody formation is described as uncommon in practice.Rather than concluding tolerance the moment it feels shorter, checking the four points above first is the right order.
There's no need to rush in these cases
Honestly, if any of the following apply, now may not be the time.
- If three months haven't passed since your last treatment — pulling the interval in can cost more than it gains
- If the line has already set — suppressing the expression doesn't remove the crease itself, and toxin alone has limits
- If you thought it was jaw muscle but the bone is developed — reducing muscle is described as producing limited change
And please tell us in advance if you're pregnant or breastfeeding, have a neuromuscular condition, or have a history of allergy to toxin.
- It usually lasts three to four months
- If it got shorter, look first at dose, position and product
- Resistance is not the first thing to suspect
Frequently asked questions
Q. Will more frequent treatments make it last longer?
A. No. Frequent treatment at short intervals is mentioned as a factor raising the risk of antibody formation, which is the reason a minimum of three months is advised.
Q. If I keep having it, will I eventually not need it?
A. There's an explanation that using the muscle less can slow the progression of expression lines. But lines that have already set have limits with toxin alone.
Q. Will stopping make it worse?
A. No evidence of being worse off than before has been established.It's closer to the effect fading gradually and returning to the original state.
Q. Which lasts longer, domestic or imported?
A. The difference in duration is described as small.The dose and placement suited to the area decide the result far more than the product name.
Q. I had jaw Botox and my cheeks look odd.
A. As the chewing muscle reduces, remaining cheek fat becoming relatively more prominent is a described phenomenon.It can happen where muscle is considered without looking at fat alongside, so seeing both before starting matters.
Q. Can I drink afterwards?
A. Safer avoided on the day.It can affect swelling and bruising, and it connects to the same advice about not lying down or rubbing right afterwards.
Q. If my expression looks unnatural, can it be reversed?
A. Unlike filler, which has a dissolving agent, toxin has no reversal agent.It's a matter of waiting for recovery over time. Which is why starting small and topping up at two weeks is often advised as the safer order.
Q. Is a wide-looking face always the jaw muscle?
A. No. It divides into muscle, fat, and developed salivary glands.Different causes mean different approaches, so reducing muscle alone may not change much.
Shorter does not mean resistance
I've said a lot, but this one line is what stays.
Botox lasts three to four months, and if yours has shortened, checking dose, placement and product is more accurate than assuming resistance.
The question I opened with closes like this.
DA Clinic Myeongdong is set to open soon.We'll share news of our opening and treatment information first on our blog and Instagram ^^
Thank you for staying with me to the end.This was Director Kwon Si-jin at DA Clinic Myeongdong.
This column is an informational article meant to provide general medical information, and the effects and side effects of treatments may vary by individual. DA Clinic Myeongdong is set to open soon. (Medical Service Act Art. 56)