Botox vs dermal fillers: how to choose between injectables

Botox and dermal filler get lumped together as “injectables,” but they solve different problems, and choosing the wrong one for your concern is a common reason people feel disappointed with a result that was, technically, done correctly.

What each one actually does

Botox (and similar botulinum toxin products) relaxes the small facial muscles that create expression lines, like the ones between your eyebrows or around your eyes when you squint or frown. It does not add volume. It softens the movement causing a line to form in the first place, which is why it works best on lines caused by repeated muscle activity rather than lines caused by lost volume or skin laxity.

Dermal filler adds volume using a gel, most commonly hyaluronic acid, injected beneath the skin. It restores fullness where tissue has thinned with age, adds structure to cheeks or jawline, or fills in a static line that stays visible even when your face is relaxed. It does not affect muscle movement.

A quick way to tell which you need

Your concern	Usually addressed by
Lines that appear when you frown, squint, or raise your eyebrows	Botox
Lines still visible when your face is completely relaxed	Filler
Hollowing under the eyes or in the cheeks	Filler
Excess sweating or jaw tension (in some cases)	Botox
Thin or less defined lips	Filler
Forehead lines from years of expression	Botox, sometimes paired with filler for deeper static lines

If you are not sure which category your concern falls into, that is a reasonable thing to say out loud in consultation. A provider who listens to what specifically bothers you, rather than defaulting to whichever product they have on hand, is doing the assessment properly.

Cost and how long results last

Botox is typically priced per unit, with a full treatment area commonly needing 20 to 40 units, putting most sessions in the range of $100 to $500. Filler is priced per syringe, generally $500 to $750 each, with some areas needing more than one syringe for a noticeable result. Botox softens gradually over three to four months as muscle activity returns. Filler tends to last longer, often six months to over a year, though this varies by product and by how quickly your body metabolizes it.

How your needs tend to change over time

Many people start with Botox in their late twenties or thirties, when expression lines first begin to linger after the face relaxes. As skin loses volume and elasticity with age, often through the forties and beyond, filler becomes more relevant for restoring structure rather than just softening movement. It is common for a treatment plan to shift gradually toward a combination of both rather than staying fixed on one, and a good provider will revisit your goals at each appointment rather than repeating the same plan by default.

What can go wrong, and how to reduce the risk

Bruising and mild swelling are common with both and usually resolve within days. Less common but more serious risks include asymmetry, lumping, or, rarely, filler affecting blood flow to surrounding tissue if injected incorrectly, which is why injector experience matters as much as the product itself. Choosing a provider trained specifically in facial anatomy and injectable technique, rather than the lowest-priced appointment available, is the single biggest factor in reducing risk. If you are still weighing whether Botox itself is the right starting point, the Botox safety guide for first-timers covers what to ask before your first session.

If you are ever unhappy with a filler result, know that hyaluronic acid filler can be dissolved with an enzyme, which is one reason many providers recommend it as a starting point over more permanent alternatives.

You can compare providers offering non-surgical and injectable treatments across Ontario, all reviewed using the same scoring methodology, to find an injector with documented experience rather than guessing from a price list alone.

Bring photos of what you liked in the past, and be specific about what bothers you rather than naming a product you saw advertised. A provider working from your actual concern, not a product request, is more likely to land on the right treatment the first time. If you are still deciding where to book, the directory home page lists board-certified surgeons and providers across every procedure category in one place.

This guide is for general information and is not a substitute for an in-person assessment; a qualified provider can tell you which treatment, or combination, fits your specific face and goals.