Dermal fillers and Botox are the two most requested injectable treatments in aesthetic medicine, and they are often confused. Both are injected, both treat signs of ageing and both require little downtime, but they work in completely different ways. Understanding the difference helps patients choose the treatment that matches their goals.

What Is Botox?

Botox is the best-known brand of botulinum toxin, a neuromodulator. It temporarily relaxes the muscles responsible for dynamic wrinkles, those that appear with facial expressions. It is commonly used for frown lines between the eyebrows, forehead lines and crow’s feet. Several brands of neuromodulators are available in Canada; they are prescription drugs and must be administered by authorized professionals.

What Are Dermal Fillers?

Dermal fillers are injectable gels that add volume, support and hydration. Most are made of hyaluronic acid (HA), such as JUVÉDERM®, RESTYLANE®, BELOTERO®, TEOSYAL® and REVANESSE®. Biostimulators, such as RADIESSE® and SCULPTRA®, stimulate collagen. Fillers are used for lips, cheeks, folds, the chin and jawline, and the tear troughs. See our article on what dermal fillers are.

Key Differences Between Botox and Fillers

Criterion	Botox (neuromodulator)	Dermal fillers
How it works	Relaxes muscles	Adds volume and support
Best for	Dynamic expression lines	Static lines, volume loss, contours
Common areas	Forehead, frown lines, crow’s feet	Lips, cheeks, folds, chin, tear troughs
Onset	3 to 14 days	Immediate
Duration	About 3 to 4 months	Several months to over a year
Reversibility	Wears off gradually	HA can be dissolved

Which Option Is Right for You?

If lines appear mainly when you frown, smile or raise your eyebrows, a neuromodulator is generally more suitable.
If the issue is lost volume, deep folds or thin lips, a filler is generally more suitable.
Many patients benefit from both, used in different areas.

The decision should be made with a qualified injector after an assessment. See our questions to ask during a consultation.

Comparing the Procedure Experience

A neuromodulator treatment takes a few minutes, with very fine needles and few injection points. A filler treatment takes a little longer, often 30 to 45 minutes, and may involve a numbing cream, a product containing lidocaine or a cannula. Both allow a return to daily activities the same day.

Cost Factors

The cost of each treatment depends on the province, the clinic, the injector’s experience, the product and the quantity used. Neuromodulators are generally priced by unit or by area, and fillers by syringe. Because fillers often last longer, comparing the total cost over a year is more useful than comparing the price of a single session.

Longevity and Maintenance

Neuromodulators usually last about three to four months. HA fillers generally last from six months to over a year depending on the product and the area, and biostimulators can last longer. Our article on how long dermal fillers last gives more detail.

References

American Society of Plastic Surgeons. (2023). 2022 plastic surgery statistics report. Retrieved from https://www.plasticsurgery.org/documents/news/statistics/2024/plastic-surgery-statistics-report-2024.pdf

Food and Drug Administration. (2023). Dermal fillers approved by the center for devices and radiological health. Retrieved from https://www.fda.gov/medical-devices/aesthetic-cosmetic-devices/fda-approved-dermal-fillers

Medical News Today. (2025). Botox vs. fillers: Uses, effects, and differences. Retrieved from https://www.medicalnewstoday.com/articles/320510

Common Questions About This Topic

What is the difference between dermal fillers and Botox?

Botox relaxes the muscles that cause expression lines, while dermal fillers add volume and support to smooth folds and restore contours.

Which lasts longer, Botox or dermal fillers?

Fillers generally last longer: several months to over a year, compared with about three to four months for neuromodulators.

Is one safer than the other?

Both have a good safety record when performed by qualified professionals. Their side effects differ; see our article on dermal filler risks and side effects.

Can I get both treatments at the same time?

Yes, many injectors combine them in one session, depending on the areas treated and the patient’s needs.

Do I need to take time off after either treatment?

Usually not. Most people return to work the same day, with possible mild swelling or bruising after fillers.

Are the results natural-looking?

Yes, when the treatment is well planned and the doses are appropriate. The goal is to look refreshed, not changed.

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