Botox vs. Dermal Fillers: What's the Difference?

If you've ever Googled "should I get Botox or fillers," you're not alone. These two treatments are often mentioned in the same breath, but they work in completely different ways. Choosing the wrong one won't get you the results you're looking for.

The short answer: Botox relaxes muscles to smooth dynamic wrinkles. Dermal fillers add volume to restore fullness and soften static lines. Many patients benefit from both, depending on their skin concerns.

This guide breaks down how each treatment works, what it treats, how long results last, and how to figure out which one is right for you.

What Is Botox and How Does It Work?

Botox is a brand name for botulinum toxin, a purified neurotoxin that temporarily relaxes targeted facial muscles. When injected in small, precise amounts, it prevents those muscles from contracting fully.

This muscle relaxation smooths out the wrinkles that form when you make expressions, such as squinting, frowning, or raising your eyebrows. These are called dynamic wrinkles because they appear with movement.

Botox is FDA-approved and has been used safely in medical and cosmetic applications for decades. At Radiant Beauty Skin Care Med Spa, botulinum toxin injections are administered by our skilled nurse practitioner and clinical team under physician supervision.

Common Botox treatment areas:

• Forehead lines

• Frown lines (the "11s" between the brows)

• Crow's feet around the eyes

• Bunny lines on the nose

• Lip lines (perioral wrinkles)

• Neck bands (platysmal bands)

What Are Dermal Fillers and How Do They Work?

Dermal fillers are injectable gels that restore volume, smooth deep lines, and enhance facial contours. Most fillers are made from hyaluronic acid, a naturally occurring substance in the body that holds moisture and keeps skin plump.

Unlike Botox, fillers don't affect muscle movement. They physically fill in areas that have lost volume due to aging, genetics, or weight loss. These are called static wrinkles because they are visible even when your face is at rest.

Some fillers, such as those made with calcium hydroxylapatite or poly-L-lactic acid, also work as collagen stimulators over time, encouraging the skin to produce new collagen for longer-lasting improvement.

Popular dermal filler brands include:

• Juvederm (hyaluronic acid)

• Restylane (hyaluronic acid)

• Sculptra (poly-L-lactic acid, collagen stimulator)

• Radiesse (calcium hydroxylapatite)

Botox vs. Dermal Fillers: Key Differences at a Glance

Feature	Botox	Dermal Fillers
What it does	Relaxes facial muscles	Restores lost volume
Best for	Dynamic wrinkles (movement-related)	Static wrinkles and volume loss
Primary ingredient	Botulinum toxin	Hyaluronic acid or collagen stimulator
Treatment time	10-20 minutes	20-45 minutes
Results visible	3-7 days	Immediately
How long it lasts	3-4 months	6 months to 2+ years
Reversible?	Fades naturally	HA fillers reversible with hyaluronidase
Common areas	Forehead, brows, crow's feet	Lips, cheeks, under eyes, nasolabial folds

What Does Botox Treat?

Botox is the right choice when your lines are caused primarily by muscle movement. A helpful self-test: look in the mirror and relax your face completely. If the wrinkles you're concerned about soften or disappear at rest, Botox is likely the better fit.

Botox works well for:

• Forehead lines that appear when you raise your brows

• Frown lines that show when you concentrate or furrow your brow

• Crow's feet that deepen when you smile or squint

• Lip lines from pursing or talking

• Chin dimpling

• Brow position adjustment (nonsurgical brow lift)

• Masseter reduction (slimming the lower face or relieving jaw tension)

• Excessive sweating (hyperhidrosis)

A good provider will assess the depth and nature of your lines before recommending Botox. Deep lines that are present even at rest may need a combined approach. To see the full range of cosmetic injectable services available, including botulinum toxin treatments, the services page has more detail on each.

What Do Dermal Fillers Treat?

As we age, the face loses fat, collagen, elastin, and even bone density in certain areas. This structural loss shows up as flattened cheeks, hollowness under the eyes, thinning lips, and lines that stay visible regardless of expression. Fillers address this kind of change.

Fillers are typically used for:

• Nasolabial folds (the lines that run from the nose to the mouth corners)

• Marionette lines (the lines that run downward from the mouth corners)

• Lip augmentation and definition

• Cheek enhancement to restore midface volume

• Under-eye hollows (tear trough area)

• Jawline contouring and definition

• Temple hollowing

• Non-surgical nose reshaping as an alternative to rhinoplasty

• Hand rejuvenation

The key distinction is structural. Fillers don't relax anything. They rebuild and redistribute volume where the face has naturally changed over time.

How Long Do Results Last?

Botox typically takes 3 to 7 days to begin working, with full results appearing around the 2-week mark. Most patients find their results last 3 to 4 months. Over time, with consistent treatment, some patients find the effects last slightly longer as the treated muscles gradually weaken from reduced use.

Dermal fillers show results immediately, though mild swelling in the first 24 to 72 hours can temporarily obscure the final outcome. Longevity depends on the filler type and the area treated. Lip fillers typically last 6 to 12 months. Cheek and jawline fillers, which are placed deeper and use denser formulations, can last 12 to 24 months or longer.

Both treatments require maintenance to sustain results. The timeline varies by individual based on metabolism, lifestyle, and the specific product used.

Can You Get Botox and Fillers at the Same Time?

Yes, and it's actually quite common. Combining both in one session, sometimes called a liquid facelift, allows you to address dynamic wrinkles and volume loss at the same time for a more balanced result.

A typical combination approach might use Botox for forehead lines and crow's feet while fillers restore volume in the cheeks and soften nasolabial folds. For patients also interested in lifting and skin tightening, a PDO Thread Lift is another option that can complement injectable treatments by providing structural support through absorbable threads placed under the skin.

Each of these treatments targets a different layer or mechanism of aging. Used together thoughtfully, they can produce more natural, comprehensive results than any single treatment alone.

Which Injectable Is Right for You?

A simple way to think about it:

• Lines that appear mainly with movement (squinting, smiling, frowning) point toward Botox.

• Lines that are present even at rest, or noticeable hollowness and flattening in the face, point toward fillers.

• Both concerns present often calls for a combination approach.

That said, self-diagnosing isn't always straightforward. The depth of a line, its location, and the underlying cause all factor into which treatment will actually work. A provider consultation is the most reliable way to get a clear recommendation for your specific situation.

You can review the full list of treatments available to get a sense of what's offered before scheduling a visit.

Not sure which one fits your concern?

A consultation is the best starting point. Your provider will look at your facial structure, discuss what's bothering you, and recommend the treatment (or combination) that makes the most sense for your goals. No commitment required.

Book a Consultation at Radiant Beauty Med Spa

Anaheim, CA | Las Vegas, NV