How Long Does Lip Filler Last? What the Studies Show

How long does lip filler last? For most people, the visible fullness lasts somewhere between 6 and 12 months, but some of the filler stays in the lip well after it stops being obvious. In this guide I explain what the lip filler trials measured, why lips that feel “worn off” may still hold filler, what changes how long yours lasts, and how to plan top-ups.

The short answer: about 6 to 12 months of visible fullness

Most hyaluronic acid lip fillers keep a visible result for roughly 6 to 12 months. The FDA gives about 6 to 12 months as the general range for hyaluronic acid fillers, and notes that how long a filler lasts depends on the product and where it is injected. The lips are one of the most mobile areas of the face, so they usually sit toward the shorter end compared with cheeks or chin.

The range is wide because “lasting” can mean three different things: lips that still look measurably fuller, lips you are still happy with, and filler that is still physically present. Those three end at different times.

What the lip filler trials found

The clearest data come from the studies used to approve lip fillers in the US, and they show that about six in ten patients still have measurably fuller lips at one year.

Study	What was measured	Result
Juvederm Volbella XC, US lip trial	At least a one-point gain in lip fullness	62% at 1 year
Restylane Kysse, US lip trial	At least a one-point gain in lip fullness	60% at 12 months
Restylane Kysse, US lip trial	Patients who felt their appearance had improved	88% at 6 months, 78% at 12 months
Kysse vs Volbella, 60 patients (2018)	Lip fullness still improved	About 60% at 6 months, about 25% at 12 months

The Volbella patient labeling states that results lasted one year in more than 60% of patients, and that repeat treatment is usually needed after that. The Kysse patient information reports similar figures. In a head-to-head study in Dermatologic Surgery, Hilton and colleagues compared the two products and found them similar in effect and duration, although Kysse needed less product on average (1.54 mL vs 1.94 mL) to reach the same improvement.

Notice the gap between the rows. In the head-to-head study, only about a quarter of patients still scored as fuller on the lip scale at 12 months, yet most still rated their lips as improved. A lip can look softer, better shaped and more hydrated long after it stops scoring as “fuller.”

Why lips that feel “worn off” may still hold filler

Filler usually fades from view before it is fully gone from the tissue. A 2024 systematic review in Dermatology Review (Rzepniewski and colleagues) pooled imaging studies of hyaluronic acid filler and concluded that it appears to last longer than 12 months, in some cases more than 2 years. The authors could not set a maximum, because products, techniques and injection sites varied so much, and none of the studies they found were in the lips.

I covered the MRI research on this in my post on lip filler migration, because it is the main reason to be careful with top-ups. If some filler is still there when the lip seems to have “worn off,” adding a full syringe on top every six months can slowly overfill the lip and push product past the border.

What changes how long your lip filler lasts

How long filler lasts depends mostly on the product, the amount, and how much the area moves. The 2024 review lists higher hyaluronic acid concentration and cross-linking as making filler more resistant to breakdown, and notes that more mobile areas break it down faster.

• The productLip fillers differ in firmness and cross-linking. Softer gels designed for hydration and fine lines tend to fade sooner than gels designed for volume.
• How much is placedA larger treatment usually stays visible longer than a small refresh. That is not a reason to place more than your lip needs; overfilling causes its own problems.
• MovementTalking, eating and smiling work the lip constantly, which is part of why lip filler fades sooner than filler in the cheeks or chin.
• Your previous treatmentsIn a small 2007 study in Archives of Dermatology, Wang and colleagues found that cross-linked hyaluronic acid injected into the skin of 11 older adults increased new collagen production at 4 and 13 weeks. That study was in forearm skin, not lips, so it only hints at why some patients find later treatments last a little longer.
• Factors with weaker evidenceMetabolism, exercise, sun and smoking are often said to shorten filler life. The review found no studies on these as longevity factors, so I don’t promise they will change your result. Sun protection and not smoking are still good for the lips themselves.

How to plan lip filler top-ups

Top-ups work best when they are planned around what is still in your lips, not around the calendar.

1. Your history first. At your consultation, expect to be asked when you were last treated, where, with which product and how much. If you don’t know, your lips can still be assessed by look and feel.
2. Product matched to your goal. KORA’s lip treatments come as Lip Plump, for volume and shape, and Lip Hydrate, for hydration and definition. Which suits you depends on your lip and what you want.
3. Micro-droplet placement. We use a micro-droplet technique for lips, placing small amounts in layers, which lets us build shape gradually and keep the border crisp.
4. A two-week review for first-timers. Every first-time lip filler patient comes back at two weeks, at no charge, so we can see how the filler has settled.
5. Top-ups when you need them. Top-ups often fall somewhere between 6 and 12 months apart, in line with the trial data, but the timing should depend on how your lips look, not a fixed schedule.

Your aftercare in the first two days affects swelling and bruising rather than how long the filler lasts. My lip filler aftercare guide covers what to do and avoid.

What lip filler costs at KORA

Lip filler is priced by treatment, and if you ever want to reverse it, hyaluronic acid filler can be dissolved.

Prices come from our current price list. Your plan and total are confirmed at a complimentary consultation before anything begins.

Learn more about lip filler and filler dissolving, or compare a lip flip and lip filler, at our clinic on the Scottsdale and Paradise Valley border.