How Long Does Botox Take to Work?

Written and medically reviewed by Parveen Sangha, NP. Updated 12 August 2026.

TREATMENT TIMELINE

The First Softening Lands Around Day Three

Botox does not switch anything off the moment it is injected. It works by blocking the signal between a nerve and the muscle it controls, and that blockade builds gradually rather than instantly. Most patients notice the first softening somewhere between day three and day five.

What you feel first is usually not a visible change in the mirror. It is a subtle sense that the muscle does not contract as hard as it used to. People often describe reaching to frown and finding the movement lighter than expected, a day or two before anyone else notices anything.

The Full Timeline

Day one to two is usually quiet. Small bumps at the injection sites settle within an hour or so, and any pinpoint bruising starts to fade. Nothing about how you look has changed yet, and that is entirely normal.

Day three to five is where most people see the first real movement. Lines that used to deepen when you raise your brows or frown start to flatten. The change is partial at this stage, so judging your result here will only worry you.

Day seven to ten brings the bulk of the effect. By this point the muscle is meaningfully relaxed and the skin above it has had time to smooth out, which is a second and separate process from the muscle itself letting go.

Day fourteen is the honest finish line. Two weeks is when your injector expects the result to be complete, and it is the point at which any review or adjustment should happen, not before.

What Changes How Fast It Works

Dose is the biggest single factor. A conservative first treatment, which is what a careful injector will usually start with, takes longer to show and produces a softer result than a heavier dose. That is a deliberate trade, not a mistake.

The muscle being treated also matters. Smaller, thinner muscles such as those around the eyes tend to respond sooner than the thicker muscle between the brows, which is one of the strongest muscles in the face.

Individual metabolism plays a part too, and it is the part nobody can predict in advance. Some people are consistently fast responders and some are consistently slow, and it tends to stay true for that person across treatments.

Why Your First Treatment Can Feel Different

If this is your first time, the result can take slightly longer to appear and can feel less dramatic than you expected. Long standing lines that have been etched into the skin over years do not disappear the moment the muscle relaxes, because part of what you are seeing is a crease in the skin rather than a muscle in motion.

Those static lines soften over subsequent treatments as the muscle stays quieter and the skin gets a chance to recover. That is why an experienced injector will tell you the second treatment often looks better than the first, and why chasing a bigger result on day five of your first appointment is usually the wrong instinct.

When to Book Your Review

A two week review is the standard, and it exists for a reason. It is early enough to make a small adjustment while the treatment is fresh, and late enough that what your injector is looking at is the real result rather than a partial one.

If nothing at all has changed by day fourteen, that is worth raising rather than accepting. It occasionally happens, and the causes range from dose to product handling to a genuine reduced response, all of which are things to discuss with the person who treated you. Once you know your timeline, the next question most people ask is how long Botox lasts before it wears off.

Timing Your Treatment in Vancouver

The two week timeline is the reason to book earlier than feels necessary. If you have a wedding, a portrait session or a holiday coming up, treat two weeks as the minimum and three as comfortable, because that leaves room for a small adjustment at your review and still lets any bruising fade.

One thing worth asking any Vancouver clinic before you book: is a two week review included, and is an adjustment within that window charged separately? Practice varies across the city, and the answer tells you a lot about whether a clinic expects to finish the job or simply to complete a transaction.