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

Botox and dermal fillers are often mentioned together, but they work in entirely different ways and address different concerns. Understanding the difference can help you have a more informed conversation with your provider about what might fit your goals.

Botox is a neuromodulator, meaning it works by temporarily relaxing the small muscles that create certain expression lines — commonly around the forehead, between the brows, and around the eyes. When those muscles contract less, the overlying skin creases less as well, which softens the appearance of lines that show up with movement, sometimes called dynamic wrinkles.

Results are temporary and gradually fade over time, which is why it's typically done as an ongoing treatment rather than a one-time procedure.

Dermal fillers work differently — instead of relaxing muscles, they add volume beneath the skin. Many fillers use hyaluronic acid, a substance naturally found in the body, to restore volume in areas like the cheeks, lips, or nasolabial folds, or to smooth static wrinkles that are visible even at rest.

Because fillers add structure rather than limiting muscle movement, they're often used for concerns related to volume loss, contouring, or lines that persist without movement.

Broadly speaking, Botox tends to be considered for expression-related lines that come and go with movement, while fillers tend to be considered for volume loss or lines present at rest. Many people use both, in different areas, as part of a broader approach.

The right choice really depends on your individual anatomy, goals, and the specific area of concern, which is why an in-person consultation and assessment matters more than general rules of thumb.

Both treatments are typically done in-office and are generally well tolerated, though mild swelling or bruising at the injection site is possible with either. Results aren't permanent, so most people who like their results plan on periodic follow-up treatments to maintain them.

A good next step is a conversation with a qualified provider who can look at your specific concerns and explain the options in more detail.