For those in their 30s getting Botox for the first time,

Let me honestly tell you the effect timeline

Last Tuesday,

one 31-year-old office worker came to the clinic.

"Doctor, I got Botox yesterday

and when I looked in the mirror today, it was the same.

Isn't this wrong?"

I hear this kind of thing two or three times a week.

So today, I'll break down the Botox effect

from exactly which day it starts to appear

and how long it lasts—the timeline itself.

You all think it's "right away after getting it," right?

But the truth is

Botox is botulinum toxin,

a muscle nerve blocker.

When injected into a muscle, it cuts off the signal going from nerve to muscle.

That's the principle.

But there's one important thing here.

Unlike fillers, it's not a procedure where volume appears right away

the moment it's injected.

Unlike fillers, Botox is

"a procedure that gradually reduces the movement of

already stiff muscles," so

time is absolutely necessary.

Why does one person feel it on day 3

and someone else take a week?

Dr. Wi Youngjin's

key insight

The Botox effect timeline explained by the director

Why it starts on day 3 and reaches its peak on day 7

It usually takes 24 to 72 hours for Botox to

block the release of the signaling substance

called acetylcholine at the nerve ending.

Usually 24 to 72 hours are needed.

So fast responders start to feel it from day 3,

"Oh, is it getting a little softer?"

while most reach the peak on day 7.

Even in papers, the peak effect timing of

botulinum toxin type A is

reported to be 7 to 14 days after injection.

So don't look in the mirror on day 3 and

decide that it "didn't work."

You should wait at least 14 days

to see the real result of this treatment.

Dr. Wi Youngjin's key summary

Botox doesn't start on the day it's injected,

but slowly begins from day 3

, peaks on day 7, and stabilizes by day 14.

So if it's been three days since your injection and it's still the same,

that's completely normal.

It lasts an average of 4 to 6 months,

and depending on your muscle mass and metabolism,

there can be a difference of plus or minus 2 months.

Botox treatment timeline summary

It varies by case, but I usually say around the 4th month

"Ah, the frown lines are starting to come back" when

you feel that way, come back.

If you come after everything has fully worn off,

the wrinkles have already settled back in,

so it's like starting over from scratch.

Three questions I get all the time in the clinic

Q1. It's been 3 days since Botox, and there's no change.

Did it fail?

The point when you notice it varies from person

to person, from 3 days to 7 days.

It takes at least a week for the signal blocking to

fully settle in.

So you should wait until day 14,

and if there's still no change after 2 weeks,

then you can check whether reinforcement is needed.

Q2. Why does the duration of effect

differ from person to person?

Basically it's 4 to 6 months, but people with a lot of muscle mass,

a fast metabolism, or who keep using the treated area

may wear off in as little as 3 months.

On the other hand, people with fewer facial expressions

may get more than 6 months.

Q3. They say frequent Botox injections

cause resistance— is that true?

To be precise, it's antibody formation.

If you keep getting injections at short intervals (within 3 months), or

repeat high doses at once, the risk goes up.

So I recommend keeping to a 4- to 6-month schedule.

In the next post, I'll explain 'the first 2 weeks after Botox, t

he changes actually seen in the clinic.'

This was Wi Youngjin.

Let's read together

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