How often do you need Botox?

Cleveland Clinic recommends retreatment at about three to four months. BOTOX Cosmetic describes at least three treatments a year, spaced at least 90 days apart.

How soon will I see anything?

Cleveland Clinic says most people notice the desired effect around the third or fourth day, with full results within 10 to 14 days. BOTOX Cosmetic's own materials say full results in 30 days.

Can I get Botox sooner than three months?

The prescribing information sets the minimum interval between treatments at three months. That is a question for your injector, not for a web page.

How long does Botox last?

Published August 19, 2026

Botox lasts about three to four months, which is why the manufacturer's own schedule is treatments spaced at least 90 days apart.

Cleveland Clinic gives the average directly: the effects of Botox last about three to four months, and retreatment is recommended at that point. It also gives the outer edge — within three to six months after treatment the toxin wears off and the muscles regain movement. BOTOX Cosmetic's own materials describe a schedule of at least three treatments a year, spaced at least 90 days apart, and the prescribing information sets the minimum interval between treatments at three months.

Sources: Cleveland Clinic, BOTOX Cosmetic (Allergan), BOTOX Cosmetic prescribing information

This page is general information, not medical advice. Prices and results vary by person, by provider and by where you live, and only a licensed provider who has assessed you can tell you what is appropriate for you.

When it starts working, and when it is finished working

Milestone	What the source says	Who says it
First noticeable effect	Around the third or fourth day	Cleveland Clinic
Full results	Within 10 to 14 days	Cleveland Clinic
Full results	In 30 days	BOTOX Cosmetic
Average duration	About three to four months	Cleveland Clinic
Movement fully returns	Within three to six months	Cleveland Clinic
Soonest you can be retreated	At least 90 days apart; the label sets a three-month minimum interval	BOTOX Cosmetic / prescribing information

Two sources give different figures for full results. Both are printed, because a reader shown only the shorter one and then left waiting has been misled by us.

Sources: Cleveland Clinic, BOTOX Cosmetic (Allergan), BOTOX Cosmetic prescribing information

How long does Botox last on the forehead?

The three-to-four-month average from Cleveland Clinic is not published per area, so the honest answer is that the forehead is inside that same band rather than on a schedule of its own. What IS published per area is the dose: the forehead lines area is labelled at 20 units.

BOTOX Cosmetic's labelled doses are 20 units in the frown lines, 24 units in the crow's feet lines and 20 units in the forehead lines — 64 units if all three are treated together.

Sources: BOTOX Cosmetic (Allergan), BOTOX Cosmetic prescribing information

How long does Botox last around the eyes?

Same answer, same reason. The crow's feet area carries the highest labelled dose of the three at 24 units, but none of the sources we will cite publishes a separate duration for it. Anyone quoting you a different number of months for the eye area specifically is going beyond what the manufacturer and Cleveland Clinic put in writing.

Why the second treatment sometimes feels different

Cleveland Clinic describes the return of movement as gradual, over three to six months — so the tail end of one treatment overlaps the start of the next if you retreat at three to four months.
The prescribing information sets a three-month minimum interval between treatments. That is a floor, not a target.
BOTOX Cosmetic frames a maintenance year as at least three treatments, which is the arithmetic of a three-to-four-month duration.

What we are not going to tell you

We are not going to tell you how long yours will last, whether you should have it, or how many units you need. Those are questions for a licensed injector who has looked at your face. What we can do is print the published figures with their sources attached, so you can tell when a quote is outside them.

If you are working out what a course of it costs across a year, the pricing is on its own page: what Botox costs, by the unit and by the area.

Who injects it matters more than the brand on the vial. These are the med spas AI assistants actually name when people ask — measured, and no place on the list is for sale.

Not your city? See every metro we measure.

Questions people ask next

How often do you need Botox?: Cleveland Clinic recommends retreatment at about three to four months. BOTOX Cosmetic describes at least three treatments a year, spaced at least 90 days apart.
How soon will I see anything?: Cleveland Clinic says most people notice the desired effect around the third or fourth day, with full results within 10 to 14 days. BOTOX Cosmetic's own materials say full results in 30 days.
Can I get Botox sooner than three months?: The prescribing information sets the minimum interval between treatments at three months. That is a question for your injector, not for a web page.

Written for patients by Most Recommended Med Spas, which measures which med spas AI assistants actually recommend in 26 U.S. metros. Nobody can pay to be on those lists. How we measure.