Xeomin side effects,

written exactly as often as we see them in the clinic each week

"I chose Xeomin because it doesn't cause resistance,

does that mean it almost has no side effects either?"

I get this question from many patients, really.

Today, I'll walk you through the reason step by step.

First, let's unpack Xeomin as a 'toxin without resistance'

Xeomin is a botulinum toxin type A formulation that

removes complex proteins

and leaves only the pure neurotoxin.

Unlike Botox (Allergan),

Xeomin has no protein coating,

which is its biggest advantage in lowering the chance of antibody formation.

That said, this is a story about 'resistance,'

not about 'zero side effects' at all.

So, Xeomin side effects,

how often do we actually see them in clinic?

Dr. Wi Young-jin's

key insight

Xeomin is called a 'toxin without resistance,'

but it is not side-effect free.

Headache occurs in about 5–10% immediately after the procedure,

and eyelid drooping is under 1% —

however, because there are no complex proteins, allergic reactions are

about half as common as with Botox.

In our clinic, we perform about 30–40 Xeomin treatments

per week,

and the number of patients who return because of side effects

is about 2–3 on average.

In percentage terms,

that comes to roughly 5–8%.

This number closely matches

the 5–10% headache rate reported in studies.

One point many people misunderstand is this:

Xeomin is called a 'toxin without resistance,'

but it is not zero side effects.

Headache appears in about 5–10% immediately after treatment,

and eyelid ptosis (drooping) is

reported in under 1%.

Because it does not contain complex proteins, allergic reactions are

reduced to about half compared with Botox.

Let me start with one patient's story.

Last month, a 25-year-old patient received Xeomin around the glabella and eye area

and came back on day 3 with a headache.

At first, they were quite frustrated, saying, "Isn't this a side effect?"

But in fact, this is the most common temporary reaction after toxin treatment.

With pain relief medication, the headache settled after about a week,

and by week 2, once the expression softened naturally,

their satisfaction improved a lot.

Headache is the most common,

followed by bruising and swelling at the injection site.

What really needs attention is

ptosis (eyelid drooping), which is under 1%,

meaning it does not occur in 1 out of 100 people.

It can happen if forehead toxin is placed too low

or if the dose is too high,

but even if it does occur, it usually recovers within 4–8 weeks.

There's one important thing here.

Xeomin's onset of effect

is also slightly different from other toxins,

usually beginning to be felt on day 2–3 and peaking

around days 10–14.

So quite a few patients come back saying, "I don't think it's working right after the procedure,"

but that is not a side effect—

it just hasn't fully kicked in yet.

Dr. Wi Young-jin's key summary

The accurate way to describe Xeomin side effects is: 'they do exist, but they are infrequent and

mostly temporary.'

The 5–10% headache rate is manageable with pain relievers,

and ptosis under 1% is usually just a matter of time.

The real difference is that, because it contains no complex proteins,

the risk of allergy and antibody formation is

cut in half.

Who is more likely to

have a higher side-effect risk with Xeomin?

This is easier to understand at a glance.

To briefly mention another case, a 36-year-old patient,

had received Botox 5–6 times elsewhere

and came in saying the effect was gradually wearing off.

After switching to Xeomin, the first treatment

made them say, "I don't really feel a big difference,"

but after the second treatment,

the duration of effect became nearly a month longer,

and satisfaction improved.

In cases like this, rather than a side effect,

Xeomin is meaningful as an alternative for

patients suspected of resistance.

The prevention protocol is simple.

Do not lie down for 4 hours after treatment,

do not massage or rub the treatment area,

and avoid alcohol and intense exercise for 24 hours.

If you get a headache, it can be managed with over-the-counter pain relievers.

If ptosis is suspected, please come in right away

so we can provide eye drops or other appropriate care.

If you've read this far,

you may be wondering about this

Q1. My headache has lasted a very long time after Xeomin.

Is that normal?

A. We need to look at this by case.

If the headache ends within 2–3 days after treatment,

it's a very common temporary reaction,

and it can usually be controlled well with pain relievers.

But if it lasts beyond a week or

gradually gets worse,

it's best to come in for an evaluation.

In rare cases, as the treated muscle relaxes,

other areas may tighten as compensation,

and that kind of case won't respond to simple pain relief

and may just need more time.

Q2. I heard Xeomin works faster than Botox,

does that mean side effects appear faster too?

A. This is actually a very common question.

Xeomin's onset is

a little faster, at about 2–3 days,

and side effects follow the same timeline.

Headache or bruising usually appears

on the day of treatment to within 3 days,

while side effects caused by muscle weakness, such as ptosis,

are often noticed when patients look in the mirror

around days 5–10.

A faster onset means

you can confirm side effects sooner as well,

so in a way, it allows earlier management.

Q3. Can Xeomin side effects

remain permanently?

A. This part can be a little tricky,

but since the toxin works by temporarily blocking nerves,

nerve function fully recovers over time.

Even if ptosis or facial asymmetry occurs,

it typically resolves naturally within 4–8 weeks at the longest.

Permanent side effects

have almost never been reported.

Hmm... that can be worrying,

but that's because it does not damage the nerve itself;

it only temporarily blocks signal transmission.

That said, during the recovery period,

you may have to accept that your expression looks a bit awkward.

If you take only one thing from today,

it is this — even though Xeomin has a low resistance risk,

its side-effect frequency is similar to other toxins,

and headache plus temporary drooping

are the most common patterns.

In the next article, I'll explain 'how to tell whether it is resistance or a dose issue'

when Xeomin doesn't seem to work.

This has been Dr. Wi Young-jin.

Also read

• Xeomin glabella Botox — how is it different from regular Botox?

• Xeomin vs regular Botox: is Xeomin really weaker?

• Xeomin vs Coretox — both are low-resistance Botox, but do you know what's different?