How Long Does Botox® Last?

How long does Botox® last?

Anon, Whenuapai.

Botulinum toxin, more commonly known at Botox® is a neurotoxin that relaxes muscles.  It is injected in different areas at different doses, in order to target muscles we no longer want to contract.

Results tend to last approximately 3-4 months, however this is dependent on a few factors.  Some injectors (and companies) argue certain brands of Botulinum toxin last longer than others, however research has consistently shown dose injected is the most important factor, as the higher the doses used, the longer results last.  Higher doses however are associated with more muscle paralysis, so a more “frozen” look, which can appear less natural.  A more targeted approach to individual anatomy can also yield longer results as no unit of toxin is wasted on muscles that do not need treatment. 

Even though typical results last 3-4 months, repeat treatments often aren’t required for a bit longer as the facial muscles take time to re-train and catch up to the rest of the face to resume normal expression.  This means one can often obtain 5-6 months of longevity out of their anti-wrinkle treatments, which has the added benefit of allowing muscles to regain full strength before repeat treatment, so are less likely to waste and lead to an odd appearance long term.  It is also fantastic for the budget!

Utilizing evidence-based products from reputable brands that are reconstituted correctly, not expired and stored correctly will also enhance results.  It is always important to ask your injector what they use and why, and check they store their products correctly.  Make sure you also keep an eye on long-term changes in your face as result of anti-wrinkle injections, as repeated high-dose treatments when not required can often lead to heaviness and/or an odd appearance with strengthening of other muscles in order to maintain normal facial expression.

Quick Answers:

How long does Botox® last on average?

Botox® typically lasts around 3–4 months, although this can vary between individuals.

What factors affect how long Botox® lasts?

The dose used, injection technique, and individual muscle strength all influence how long results last. Higher doses tend to last longer but can look less natural.

Do different Botox® brands last longer than others?

Not usually. Research shows that dose matters more than brand, with higher doses producing longer-lasting effects.

Can Botox® last longer with repeat treatments?

Yes. With repeat treatments, muscles often take longer to regain full strength, meaning results can last 5–6 months for some people.

Is it better to wait until Botox® fully wears off before repeating treatment?

Often, yes. Allowing muscles to fully recover can reduce the risk of long-term muscle wasting and help maintain a more natural appearance.

Does product quality affect how long Botox® lasts?

Yes. Using reputable brands known to be stored, reconstituted, and injected correctly can help optimise results and longevity.

If you have a question for Dr. Heather you would like answered anonymously, please email askdrheather@allor.co.nz.

Botox®, Prescription Medicine For the treatment of frown lines and crow’s feet around the eyes.  Botox® has risks and benefits. Ask your doctor if Botox is right for you. Botulinum toxin type A 50, 100, 200 Units. For product information check with your doctor or Consumer Medicine Information on www.medsafe.govt.nz. Click for further details. Allergan, Auckland.