When Lip Filler Fades Unevenly: Why a Small Touch-Up Beats Starting Over

A few months ago, one of our patients had her lips treated with Juvéderm Volbella XC here at Serene. She loved the result. Then, about three months later, she came back with a concern: when she smiled, she could see a small dip in the center of her upper lip, and a slight flat spot along the lower edge of the right side of her upper lip. At rest, it was hard to notice. In a smile, it stood out.

She wasn’t sure what to expect. Did she need a whole new syringe? Had something gone wrong?

Neither. And the way we handled it says a lot about how we care for patients at Serene Med Spa in Hudson, Ohio and Barboursville, West Virginia: we don’t treat and disappear. If something changes, we want you back in the chair so we can look at it together.

What we did: a small, targeted touch-up

After examining her lips at rest and while smiling, I placed a small amount of Volbella XC in just the two areas that had softened:

• the center of the upper lip, and
• the lower part of the right upper lip.

The goal wasn’t more volume. It was balance, restoring an even shape so her lips look natural from every angle. No full re-treatment, no “starting over.”

I asked her to come back in two weeks. By then, most of the early swelling has settled, and we can check the result at rest and in a full smile. We’ll update this post with her follow-up photos.

Why does lip filler fade unevenly?

Hyaluronic acid (HA) fillers like Volbella are designed to be temporary. Your body gradually breaks them down, and that process isn’t always perfectly even. Here’s what the research tells us:

• Your body clears filler naturally. A 2024 review explains that HA fillers are broken down by the body’s own hyaluronidase enzymes and by free radicals (reactive oxygen species).
• Lips are always moving. After injection, filler is exposed to compression, stretching and twisting from the muscles around it. Your lips move every time you talk, eat, drink and smile.
• Different spots can fade at different rates. In one long-term MRI case, filler had almost completely broken down in one area of the face (the chin) while it was still visible in others. That was a single patient and didn’t involve the lips, but it shows the same product doesn’t always behave the same way everywhere.
• The product’s design matters too. How tightly the HA is cross-linked affects how long it lasts. Volbella uses Allergan’s Vycross technology and is made to be soft and natural in the lips.

To be clear, no published study has measured exactly why one part of a single lip softens before another. Movement, how the filler settled and each person’s own tissue are the most likely explanations. What we do know is that it happens, and that it’s fixable.

How long does lip filler last?

Longer for some people than others. Volbella XC is FDA-approved for lip augmentation and for lines around the mouth in adults over 21. In its U.S. clinical trial, about 62% of patients still had improved lip fullness one year later. A European study found 48% were still responding at 12 months.

A 2021 analysis that pooled lip filler studies found that about 91% of patients still had a response at 2 months, 74% at 6 months and 46% at 12 months. In other words, some patients see changes well before the one-year mark, which is exactly what happened here.

Why it shows up more when you smile

When you smile, your upper lip stretches and thins. Small differences in volume that are invisible at rest can suddenly show. That’s why a lip evaluation shouldn’t stop at a still photo. A 2025 expert framework on natural-looking lip filler recommends checking the lips in motion, not just at rest. At Serene, I look at your lips relaxed, talking and smiling before deciding where filler is needed.

Touch-ups are part of the plan

Touch-ups aren’t a sign that something went wrong. They’re built into how these fillers were studied:

• In the FDA trial of Volbella XC, patients could have an optional touch-up about one month after their first treatment.
• In a follow-up study, patients who came back for repeat treatment needed less product, a median of 1.5 mL, compared with 2.6 mL for their first treatment plus touch-up.

That’s the idea behind a targeted touch-up: add only what’s needed, where it’s needed. Many touch-ups use far less than a full syringe. If you do need more, our half-syringe option is $300 and a full syringe is $500, at both locations.

Why follow-up matters

• Swelling settles. In the Volbella trial, most injection-site reactions such as swelling or tenderness resolved within two weeks, and nearly all of the rest within a month. A two-week visit lets us judge the true result.
• We check you in motion. We look again at rest and smiling, and fine-tune only if needed.
• You’re not on your own. If anything looks or feels off after your treatment, call us. That’s what we’re here for.

Frequently asked questions

Is it normal for lip filler to look uneven after a few months?

It can happen. Hyaluronic acid filler breaks down naturally, and it doesn’t always soften at the same rate everywhere, especially in a part of the face that moves as much as the lips.

Do I need a whole new syringe if my lip filler fades unevenly?

Not necessarily. Often a small, targeted amount in the areas that softened is enough to restore an even shape.

Why is the unevenness more noticeable when I smile?

Smiling stretches and thins the upper lip, so small volume differences show more. That’s why we evaluate lips at rest and in motion.

How long does Volbella lip filler last?

It varies. In the U.S. trial, about 62% of patients still had improvement at one year. Some people notice changes sooner.

When should I come back after lip filler?

We usually see patients about two weeks after treatment, once early swelling has settled, and anytime you have a concern.

Where can I get lip filler touch-ups near me?

Serene Med Spa offers physician-led lip filler in Hudson, OH, serving Stow, Twinsburg, Aurora, Streetsboro, Macedonia, Solon, Kent, Cuyahoga Falls and Akron, and in Barboursville, WV, serving Huntington, Milton, Ona, Hurricane, Culloden, Lesage, Ashland, KY and Proctorville and Chesapeake, OH.

Noticed a change in your lips?

Whether your filler was done with us or you’re just wondering what’s possible, book a complimentary, no-commitment consultation. Visit us at 50 W Streetsboro St, Suite 2, Hudson, OH · (330) 460-5915, or 1 Chateau Grove Ln, Barboursville, WV · (304) 520-0461. Learn more on our lip filler page.

References: U.S. Food and Drug Administration. Summary of Safety and Effectiveness Data: Juvéderm Volbella XC (P110033/S018). 2016. · Rivkin A, et al. Safety and Effectiveness of Repeat Treatment With VYC-15L for Lip and Perioral Enhancement. Aesthet Surg J. 2019. · Eccleston D, Murphy DK. Juvéderm Volbella in the perioral area: a 12-month prospective, multicenter, open-label study. Clin Cosmet Investig Dermatol. 2012. · Czumbel LM, et al. Hyaluronic Acid Is an Effective Dermal Filler for Lip Augmentation: A Meta-Analysis. Front Surg. 2021. · Wollina U, Goldman A. Spontaneous and induced degradation of dermal fillers: A review. J Cutan Aesthet Surg. 2024. · Fundarò SP, et al. The Rheology and Physicochemical Characteristics of Hyaluronic Acid Fillers: Their Clinical Implications. Int J Mol Sci. 2022. · Master M, Roberts S. Long-term MRI Follow-up of Hyaluronic Acid Dermal Filler. Plast Reconstr Surg Glob Open. 2022. · Goldie K, et al. Universal Lip Integrity, Proportion, and Structure: A Framework for Achieving Consistent, Natural-Looking Lip Augmentation Using Hyaluronic Acid Fillers. Aesthet Surg J Open Forum. 2025.

This article is for general information only and is not medical advice. Photos are of a Serene Med Spa patient, shared with her written consent and cropped to protect her privacy. After photos were taken the same day as treatment. Individual results vary. Lip filler is provided only after consultation and evaluation by a licensed provider.