Injectables 101: Botox vs Fillers
By Heather D. Rogers, MD, FAAD, Double Board-Certified Dermatologist
Botox and dermal fillers are injectable cosmetic treatments that address different signs of facial aging. Botox relaxes muscles that cause dynamic wrinkles, while dermal fillers restore lost volume and facial structure. They are often used together for balanced, natural-looking results.
As a practicing procedural dermatologist, I have hundreds of conversations each month about neuromodulators (Botox, Dysport, Daxxify, Xeomin, Jeauveu) and dermal fillers (Juvederm, Restylane, RHA, Evolysse). This guide explains what Botox and filler are, what they can do, what they cannot do, and how to decide whether either treatment makes sense for you. The goal is to help you be an informed consumer—whether you’re considering injectables or simply want to understand what others are doing.
Key Differences Between Botox and Dermal Fillers
- Botox (neuromodulators): Relax muscles that cause wrinkles
- Dermal fillers: Restore lost volume
- Botox Treats: Movement-related Lines
- Fillers treat: Volume loss, hollowness, contour changes
-
Often Used Together: Each treats different signs of facial aging and are often used together for natural looking results
What Is the Difference Between Botox and Filler?
The main difference between Botox and dermal fillers is that Botox relaxes wrinkle-causing muscles, while fillers restore lost facial volume and structure.
Botox relaxes wrinkle-causing muscles. Fillers restore lost volume and structure. If you look in the mirror and raise your eyebrows, squint, or frown, you’ll see lines form from muscle movement. These are dynamic lines, and Botox softens them by relaxing the underlying muscles. Fillers do something entirely different. They add volume to areas where aging has caused bone loss, fat pad descent, and skin laxity. This can lead to under-eye hollowness, loss of cheek definition, nasolabial folds, and lip thinning. Fillers restore structure and support but do not relax muscles.
What Are Alternatives to Botox?
Several FDA-approved neuromodulators work similarly but differ in dosing, spread, and duration. Common neuromodulators include
- Botox
- Dysport
- Xeomin
- Jeuveau
- Daxxify
All are FDA-approved and safe when used appropriately. Botox was originally approved to treat eye muscle disorders such as strabismus, and physicians noticed wrinkle softening as a secondary benefit.
What Does Botox Do for the Face?
Common Botox Treatments
Botox softens expression lines caused by muscle movement. The most common treatment areas are the
- Forehead lines
- Glabellar “11s”
- Crow’s feet
Less Common Botox Uses
- Lip flip
- Chin dimpling
- Masseter slimming or jaw clenching
- Downturned mouth corners
- Nasal tip lift
- Platysmal neck bands
- Hyperhidrosis in the underarms
- Trapezius slimming
Does Botox Hurt?
Botox injections are quick and generally well tolerated. A very small needle, typically 30 gauge or smaller, is used. Discomfort is brief and mild for most people, though sensitive areas like the lips can be more uncomfortable. The forehead usually requires five to ten injections, the glabella three to five, and the crow’s feet area about three injections per side.
How Long Does Botox Last?
Most Botox results last about three months, with the full effect visible at 14 days. However there will be individual variations. Botox begins to wear off before the three-month mark, and metabolism affects duration. Daxxify can be longer, in the way I dose it, it often lasts two to six weeks but never twice as long.
Botox Side Effects and Risks
Side effects are temporary and dose-dependent.
Too much Botox can lead to heavy brows, flattened expression, smile asymmetry, or difficulty pursing the lips. Too little Botox may result in incomplete results, though additional units can easily be added. It is generally better to undertreat and add more later.
How Much Does Botox Cost?
Botox is usually priced per unit and uses the approximate units
- Typical cost per unit: ranges from $10 to $25 (depending on location and injector expertise)
- Forehead: ~12 units
- Glabella: ~20 units
- Crow’s Feet: ~12 units per side
Note: Units vary by product and anatomy.
First Time Getting Botox
First time patients of botox should start with a consultation and a conservative treatment plan, working with an experienced, medically trained injector. Before your first appointment, consider the following
- Research injectors
- Review before & after photos and aesthetic style
- Choose a provider with a similar aesthetic style and be able to manage possible complications.
- Schedule a consultation
- Start conservatively
When Should You Start Botox?
Start when you want to, not at a specific age. Some begin in their twenties, others in their sixties. The right time is when you feel ready and informed.
Can You Stop Botox?
Yes. If you stop, muscle movement returns and lines gradually reappear. There is no rebound worsening.
Long-Term Effects of Botox
Long-term Botox use is safe. It has been used for decades with 100s of journal articles reviewing its safety and efficacy for both medical and cosmetics uses. All medications have possible complications and serious complications from the long term use of Botox is very low.
What Do Dermal Fillers Do?
Dermal fillers restore facial volume, improve contour, and support aging tissues.
Dermal fillers restore lost volume and structure to the face. They add volume, support tissues, and enhance contours. They do not relax muscles or treat dynamic wrinkles.
Types of Fillers
Most fillers are hyaluronic acid-based, with some biostimulatory options.
Hyaluronic Acid Fillers
Hyaluronic acid (HA) fillers restore lost volume and hydration by attracting water within the skin, helping to smooth wrinkles, enhance contours, and support natural facial structure.
- Juvederm
- Restylane
- RHA
- Evolysse
- Belotero
Biostimulatory Fillers
Biostimulatory fillers stimulate your body’s collagen production rather than directly adding volume with manufactured hyaluronic acid. These include
- Sculptra
- Radiesse
How Long Does Filler Last?
HA Fillers (Hyaluronic Acid Fillers)
Dermal fillers can last anywhere from six months to several years, depending on the product used, where it is placed, and how much is injected. Softer, more flexible fillers, like those used in the lips and superficial lines tend to break down more quickly. Firmer fillers placed deeper in areas such as the cheeks or jawline typically last longer.
Longevity is influenced by several factors, including:
- The filler’s degree of cross-linking and formulation
- Depth of placement
- Treatment area movement
- Individual metabolism
While the filler itself gradually dissolves, subtle structural improvements may persist longer as the surrounding tissues adapt.
Biostimulatory Fillers
Biostimulatory fillers work differently from hyaluronic acid fillers. Instead of primarily adding manufactured volume, they stimulate the body to produce new collagen. Results appear more gradually and often last longer.
Sculptra (poly-L-lactic acid)
- Results develop gradually over 2–4 months
- Stimulates ongoing collagen production after treatment
- Effects last 2 years, depending on treatment area and dosing
Radiesse (calcium hydroxylapatite)
- Provides immediate structural support along with collagen stimulation
- Results generally last 12–18 months
- When diluted (“hyperdilute”) results last about 12 months
Does Filler Hurt?
Filler injections are more uncomfortable than Botox but manageable. Larger needles are used and soreness or bruising can last a few days. Sculptra may cause temporary achiness because collagen stimulation creates inflammation.
Can You Feel Filler?
Filler can sometimes be felt when pressed but usually becomes less noticeable over time. Most people do not notice it during daily life.
Risks of Dermal Fillers
Most risks are minor, but rare serious complications can occur.
Common Risks include
- Bruising
- Swelling
- Asymmetry
- Nodules
Rare but serious risks include
- Vascular occlusion
- Tissue loss
- Blindness
- Stroke
Always choose an experienced injector who can reverse hyaluronic acid filler.
Where Can Filler Be Injected?
Common areas include
- Cheek
- Lips
- Under eyes
- Nasolabial folds.
Less common areas include
- Nose
- Jawline
- Chin
- Temples
- Hands
Botox vs Filler: Which Should You Choose?
Botox is best for movement-related wrinkles while filler is best for volume loss. Often, the best results come from using both together. Botox is priced per unit, while filler typically costs $500 to $1200 per syringe. One syringe is 1cc, about one-fifth of a teaspoon. Many patients need two to three syringes for noticeable change.
What Is Sculptra?
Sculptra stimulates collagen for gradual, natural-looking volume. Results take about three months because your body builds collagen in response.
What If You Don’t Like Filler?
Hyaluronic acid fillers can be dissolved with hyaluronidase. Reversal may require multiple treatments and can dissolve some natural hyaluronic acid in the area.
Botox vs Fillers: Final Summary
Botox softens wrinkles caused by muscle movement, while fillers restore volume lost with aging. They treat different concerns and are often combined for balanced, natural-looking results. Choosing an experienced injector and starting conservatively leads to the safest outcomes.
| Feature | Botox | Dermal Fillers | Biostim Fillers |
|
Treats |
Dynamic wrinkles | Volume loss | Volume loss and thinning skin |
| Mechanism | Relaxes muscles | Adds volume | Adds volume and improves skin quality |
| Onset | 7 - 14 days | Immediate | 3 to 4 months |
| Duration | ~3 months | 6 - ? months | 27 months |
| Reversible | Wears Off | Dissolvable | Breaks down over time, difficult to reverse |
References
Cavallini, Maurizio, et al. "Safety of Botulinum Toxin A in Aesthetic Treatments: A Systematic Review of Clinical Studies." Dermatologic Surgery, vol. 40, no. 5, May 2014, pp. 525–536, doi:10.1111/dsu.12463
About the Author: Dr. Heather D. Rogers, MD
Dr. Heather D. Rogers, MD is a double board-certified procedural dermatologist and Mohs surgeon and the co-founder of Modern Dermatology in Seattle, where she sees patients full-time. She is nationally recognized for her expertise in skin health, aging, and skin cancer prevention, and for her clear, evidence-based skincare guidance. Dr. Rogers serves on the American Academy of Dermatology Media Team, the Credo Beauty Council, the Sorette for Motherhood Scientific Advisory Board, and the NewBeauty Brain Trust.
She is the founder of Doctor Rogers Skincare, a dermatologist-developed line reflecting her less-is-more, science-backed approach to healthy skin. Dr. Rogers is a graduate of Stanford University, the University of Washington School of Medicine, and completed her dermatology training at Columbia University Medical Center.
Instagram: @drheatherrogers
Practice: mdinseattle.com
Skincare: doctorrogers.com
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