Botox or Filler for Wrinkles? How to Know Which You Need

Botox Cosmetic (onabotulinumtoxinA) is a botulinum toxin.

It works by blocking acetylcholine release at nerve endings, which produces a partial, localized reduction in muscle activity; the effect reverses slowly as the nerve endings regrow.

Its label covers four cosmetic areas: moderate to severe frown lines (glabellar lines), crow's feet (lateral canthal lines), forehead lines, and platysma bands (vertical neck bands), the last added in October 2024.

No other cosmetic area is on the label.

Fillers do something different: FDA describes them as medical device implants injected to create a smoother or fuller appearance in the face, including the nasolabial folds (smile lines), cheeks, chin, lips and the back of the hands.

The materials group by how long they last: hyaluronic acid (a sugar naturally present in skin), calcium hydroxylapatite and poly-L-lactic acid are absorbable, while one material, PMMA, is not absorbed at all.

So the first question is not which injectable is better but what is making the line: muscle activity, lost volume, or both.

Botox is one botulinum toxin brand and Dysport (abobotulinumtoxinA) is another, approved for frown lines in adults under 65; each brand has its own guide on this site (Botox and Dysport).

Filler is a category of many products, each approved for its own areas — the dermal fillers guide maps them.

For scale: the American Society of Plastic Surgeons' 2025 statistics report puts neuromodulator injections ("Botox") at roughly half of all minimally invasive procedures performed by ASPS member surgeons, and hyaluronic acid fillers at another 30%.

Those are member-surgeon survey estimates, not med spa totals.

The distinction behind the choice is dynamic versus static.

Dynamic wrinkles appear when muscles contract — frowning, raising the brows, squinting.

Static wrinkles are visible even at rest.

A 2014 review in American Family Physician reports that Botox produces more dramatic results on dynamic wrinkles and less dramatic results on static wrinkles, and that facial wrinkles come from thinning of the dermis plus repeated muscle contraction.

Timing runs in opposite directions.

The Botox Cosmetic label says the effect begins 1 to 2 days after injection and builds over the first week; the American Academy of Dermatology (AAD) says most people see results within 3 to 7 days.

Filler shows up sooner: AAD says most fillers produce visible results immediately, while poly-L-lactic acid (Sculptra) appears over 2 to 3 weeks and builds with time, and that filler redness, swelling, tenderness and bruising usually clear within 7 to 14 days.

Duration is the other half.

The label gives 3 to 4 months for frown lines, and the same review puts Botox's full effect at about two weeks.

For the common wrinkle zones, the labels answer the area question directly.

The doses below are each label's own; what your case needs is a clinical judgment made in person.

The under-eye row hides several different problems.

A review separates hollows (volume loss), bags (prolapsed fat) and laxity, and notes that dark circles can come from pigmentation or from thin, translucent skin — and that filler does not treat pigmentation.

The two approved products above are the on-label option for hollows; other fillers used under the eyes are off-label there.

Severe bags with loose eyelid skin are yet another case: filler cannot camouflage that contour even in large amounts, and a review reports some people may benefit instead from blepharoplasty, a surgical option.

Not every line traces to muscle or volume: AAD lists fine lines and sun-damaged skin among what chemical peels treat.

The wrinkles treatments overview covers peels, lasers, microneedling and skin tightening alongside these two.

Because the two work on different causes, one face can have a use for each: a toxin for muscle-driven lines, filler for folds and hollows.

What the evidence says about taking both is narrow: FDA states that the safe use of fillers in combination with neuromodulators ("Botox") or other treatments has not been evaluated in controlled clinical studies.

How a provider sequences the two, and where, is a judgment those studies do not cover — which makes it a consultation question.

Eligibility has its own split.

Nothing here tells you which to get.

The practical version of the question is which change bothers you more — a line that appears with movement, or a fold or hollow that is there at rest — and the provider who examines the area can tell you which of the two, or both, has evidence behind it for that spot.

They are priced differently.

Botulinum toxin is priced per unit or per treatment area, and the labeled doses give a floor for the unit count per area — 20 units for frown lines and 24 for crow's feet on the Botox Cosmetic label — so an area's price tracks units times the practice's per-unit rate.

LaserAway's published price list quotes Juvéderm lips at $450 per full syringe, alongside Botox at $15 per unit, or $10 per unit in a 300-unit bank; the chain's own prices, as of October 2026.

For national reference points, the American Society of Plastic Surgeons (ASPS) cost pages list an average fee of $435 for botulinum toxin injections, and average costs of $715 for hyaluronic acid fillers, $901 for non-HA fillers such as Radiesse and Sculptra, and $743 for lip augmentation with filler.

These are ASPS member plastic surgeons' average fees per treatment, not med spa prices, and neither cost page states the data year — treat them as scale, not quotes.

ASPS says filler cost varies with the injector's expertise and qualifications, the type of procedure, the time and effort required and the office's location, and that health insurance does not cover dermal fillers.

Longevity is where the comparison flips.

The Botox Cosmetic label gives 3 to 4 months for frown lines, and AAD gives the same range and adds that the effect sometimes lasts longer.

Filler durations run longer and depend on the material: AAD's table gives hyaluronic acid 4 to 12 months, calcium hydroxylapatite 6 months to 1 year and poly-L-lactic acid 1 to 3 years, while FDA's page gives HA 6 to 12 months, calcium hydroxylapatite approximately 18 months and poly-L-lactic acid up to 2 years — the two sources disagree, and duration varies by product and area.

For named products, Allergan states maximum durations with optimal treatment: up to 2 years for Voluma XC in the cheeks, up to 18 months for Vollure XC in smile lines and up to 1 year for Volbella XC under the eyes.

So the two renew on different clocks: toxin on the label's 3-to-4-month frown-line cycle — AAD gives the same range generally — and filler by material, product and area within the ranges above.

A longer calendar is not automatically better value — the dose, the product and the area all change the math, which is why quotes for the same product, area and dosing are the ones to set side by side.

Whichever product fits, the setting rules are the same.

AAD warns never to get Botox or filler injections at a non-medical spa, a party, a salon or someone's home, and says toxin bought online without a medical license differs from what dermatologists use.

Who may inject is state law.

AmSpa, the med spa industry association, holds that injecting botulinum toxin is the practice of medicine because it uses a prescription drug, so it must be done by a physician, an independent-practice nurse practitioner or another licensed professional working within their scope, under rules that vary by state.

AAD's suggested questions before a cosmetic procedure work as a vetting list here: how many times the provider has done this exact procedure, how often they treat patients with your skin tone and type, what results are realistic — with before-and-after photos of people with similar skin tones — and what the risks, recovery time, number of treatments and cost will be.

The comparison-specific questions to add: which toxin brand, which filler product, and whether the quote is per unit, per area or per syringe.

National averages will not settle your local price; quotes for the same product, area and dosing will.