Dermal Filler Questions, Answered

Dermal fillers are among the most requested med spa treatments, and among the most misunderstood. Here are direct answers to the questions patients ask most.

What is dermal filler, exactly?

Most modern fillers are gels made of hyaluronic acid, a sugar molecule your body already produces. Injected beneath the skin, they restore volume, smooth folds, and shape features such as lips, cheeks, and jawlines. Common FDA-approved brands include Juvederm and Restylane product families. Other filler types exist, such as calcium hydroxylapatite and poly-L-lactic acid, which work differently and last longer.

How is filler different from Botox?

They solve different problems. Botox relaxes muscles that crease the skin when you make expressions. Filler adds volume where tissue has thinned or where you want more structure. Many patients eventually use both, but neither substitutes for the other.

How long does filler last?

It depends on the product and the location. Lip filler often lasts 6 to 12 months. Cheek filler can last a year or more. Areas with more movement break filler down faster. Metabolism varies by person, so treat every duration estimate as a range, not a promise.

Does it hurt?

Expect pressure and brief stinging. Most fillers include lidocaine, and providers typically add numbing cream. Lips are the most sensitive area. Discomfort is real but short, and most patients tolerate it easily.

Can filler be dissolved?

Hyaluronic acid fillers can be dissolved with an enzyme called hyaluronidase. This is a genuine safety net, but not a perfect one. Dissolving may take multiple sessions, and non-hyaluronic fillers cannot be dissolved at all. This is one reason first-time patients should usually start with a hyaluronic acid product.

What are the real risks?

Common and temporary: swelling, bruising, tenderness, and small lumps that settle within days to weeks.

Rare and serious: vascular occlusion, where filler enters or compresses a blood vessel. Untreated, it can damage skin and, in extremely rare cases involving vessels near the eye, affect vision. This is why injector skill matters more with filler than with almost any other med spa treatment. Your injector should know facial vascular anatomy deeply and keep hyaluronidase in the room.

Why do prices vary so much?

Filler is priced per syringe, and legitimate product has a significant wholesale cost. Prices vary with the injector’s experience, the product line, and the market. For example, dermal filler in Knoxville usually costs less than the same syringe in a large coastal city, but real product has a price floor everywhere. Be cautious with prices that undercut everyone else by a wide margin. Counterfeit and diluted filler exist, and they are most common where prices look impossible.

Will I look overdone?

Not if the plan is conservative. The overfilled looks you notice are the result of too much product over too many sessions, often chasing a trend. A skilled injector works in small amounts, respects your anatomy, and tells you when to stop. You can always add more later. Removing it is harder.

What should I ask before booking?

Four questions cover most of the risk: Who is injecting, and what license do they hold? Which product are you using, and is it FDA approved? Do you stock hyaluronidase? What is the plan if I have a complication after hours?

Confident answers to those questions are the mark of a practice you can trust with your face.