How Can I Get Rid of Smile Lines That Last

To get rid of smile lines in a way that lasts, name the mark before buying a treatment. A nasolabial fold visible at rest is a volume-and-anatomy crease from the side of the nose to the mouth; a fine dehydration line that fades after moisturizer is a surface problem. The U.S. Food and Drug Administration has approved absorbable hyaluronic acid fillers for moderate to severe facial wrinkles and folds, including nasolabial folds, in adults 22 years of age or older. Daily broad-spectrum sunscreen at SPF 30, the American Academy of Dermatology minimum, plus a prescription retinoid, can change photodamage at the skin surface. Duration figures disagree. The FDA's dermal-filler overview states that hyaluronic acid effects last approximately 6 to 12 months. The JUVÉDERM VOLLURE XC directions for use, and a 123-patient trial led by Steven H. Dayan, MD, FACS, report fold correction lasting 18 months in 59 percent of treated nasolabial folds.

A tester matching a heat setting to a fault would not treat a warped plate as a surface stain. A nasolabial fold is closer to the warp.

1. Name the mark at rest, in a smile, and in a photograph.
2. Treat surface lines with daily broad-spectrum SPF 30 and a retinoid.
3. Discuss HA filler only for moderate-to-severe folds after the label and a vascular plan.

Are the marks nasolabial folds, fine lines, or a lighting trick?

Smile lines is a search phrase. The crease people mean is the nasolabial fold: the trough from the ala of the nose to the corner of the mouth. Rod J. Rohrich, MD, and Joel E. Pessa, MD, writing in Plastic and Reconstructive Surgery in 2008, described how loss of deep medial cheek fat produces a pseudoptosis, an excess skin envelope that makes that fold look deeper even when the skin itself is not a wrinkle. Lip-levator muscles press on the fat with each wide smile. The mark that remains at rest is a contour problem.

Fine dehydration lines sit in the stratum corneum. They look like tissue paper around the mouth rather than one carved gutter, and they soften within hours of a bland moisturizer. A retinoid trial can move them; a mid-dermis hyaluronic acid gel is not labeled to fill them.

Expression lines appear only when the zygomaticus and levator muscles fire. At rest the skin is smooth; on a wide smile a bracket shows. BOTOX Cosmetic (onabotulinumtoxinA) is labeled by the FDA for moderate to severe glabellar lines, lateral canthal lines, forehead lines, and platysma bands in adults. The prescribing information does not list nasolabial folds. Using a neuromodulator near the lip elevators is off-label and can change how the mouth lifts.

Texture change is roughness, pores, or mottled pigment. Kang’s 204-subject trial of tretinoin emollient cream 0.05% in the American Journal of Clinical Dermatology reported improvement in fine and coarse wrinkling and mottled hyperpigmentation. That is photodamage next to a fold.

A wide-angle front camera shortens the midface and a flash deepens the sulcus. If the line is dramatic only in selfies, the intervention is lighting and lens distance. Check the face at rest, in a held smile, and in the photo that started the search.

How do nasolabial folds differ from fine dehydration lines when choosing care?

A nasolabial fold that remains when the face is still is graded on a photonumeric scale. Doris J. Day, MD, and colleagues validated the five-grade Wrinkle Severity Rating Scale in the American Journal of Clinical Dermatology in 2004. Later papers reprint it as scores 0 through 4 or grades 1 through 5; the numbering offset is real. JUVÉDERM trials use a five-point scale of the same family. In the Ultra Plus XC lidocaine study, mean baseline severity was 2.8 and fell to 1.0 at two weeks. The FDA indication language is “moderate to severe” facial wrinkles and folds such as nasolabial folds.

A fine dehydration line is not scored on that fold scale. Topical tretinoin has an FDA photoaging indication dating to 1995. Kang’s 204-person trial is the long-horizon evidence that fine and coarse wrinkling can move with 0.05% emollient cream once daily for up to two years. Hyaluronic acid placed into a dehydration line is the wrong layer, and it can leave a ridge or a Tyndall tint.

| Property | Nasolabial fold | Fine dehydration line | Expression crease | | --- | --- | --- | --- | | Visible at rest | Yes, as a trough | Often faint or gone | No | | After moisturizer | Depth unchanged | Softens within hours | Unchanged | | Trial scale | 5-point NLFSS / WSRS; FDA: moderate to severe | Not an NLFSS grade | Dynamic | | SPF 30 and a retinoid | Photodamage around the crease | Texture and water-binding | Little | | HA filler label | Moderate to severe folds, adults over 21 | Not this feature | Not this feature | | BOTOX Cosmetic label | Not an indication | Not an indication | Not an indication |

What can sunscreen, retinoids, and moisturizer actually change?

The American Academy of Dermatology tells the public to use a broad-spectrum, water-resistant sunscreen of SPF 30 or higher. On its label-decoding page, the Academy states that SPF 15 filters about 93 percent of UVB and SPF 30 about 97 percent. The FDA’s sunscreen consumer page still sets the aging-prevention claim at broad-spectrum SPF 15 or higher, with reapplication at least every two hours and a full-body dose of at least one ounce. Anna L. Chien, MD, associate professor of dermatology at Johns Hopkins University School of Medicine and a member of The Skin Cancer Foundation’s Photobiology Committee, told HealthCentral: “The American Academy of Dermatology Association [AAD] has recommended SPF 30 for some time, though the Food and Drug Administration still recommends using a daily broad-spectrum sunscreen of SPF 15 or higher.” Apply SPF 30 to the face, a teaspoon per the Academy’s sunscreen FAQs, 15 minutes before going out.

Kang’s group applied tretinoin emollient cream 0.05% once daily for up to two years in 204 adults and saw clinical improvement against vehicle. Griffiths and colleagues, in a 48-week comparison, found 0.1% and 0.025% tretinoin produced similar photoaging improvement, with more irritation at 0.1%. A bland moisturizer buffers retinoid irritation. A moderate-to-severe fold, grade 2.8 on the Ultra Plus XC baseline, remains a fold.

When is a clinical procedure worth discussing?

A procedure is worth a consult when the mark is a fold at rest, the severity sits in the moderate-to-severe band the FDA uses, and the searcher will accept downtime, cost, and a maintenance calendar. Volume loss in the midface, documented by Rohrich and Pessa, is why a cream plateaus.

Injectable implants here are approved for moderate to severe wrinkles and folds, not for a faint line that vanishes on stretch. Steven H. Dayan, MD, FACS, a board-certified facial plastic surgeon at the University of Illinois College of Medicine, led a VOLLURE XC cohort on a five-point photonumeric nasolabial fold severity scale. Responder rates were 93 percent at month 6, 85 percent at month 9, and 59 percent at month 18 after initial treatment plus touch-up. Median volume for that initial-plus-touch-up period was 1.7 mL. Repeat treatment used a median 0.6 mL, about one-third of the first load. The JUVÉDERM directions for use cap any JUVÉDERM gel at 20 mL per 60 kg (132 lb) body mass per year.

Downtime is not a single number. The Ultra Plus patient labeling states that most injection-site responses last 7 days or less; redness and pain or tenderness each occurred in 90 percent of treated folds. The VOLLURE XC diaries show a longer tail: firmness in 88.5 percent of 122 subjects, and among those with firmness, 22.2 percent still had it at 15 to 30 days. The ASDS task force describes swelling and bruising that resolve within 1 to 2 weeks. Ultra Plus XC directions tell patients to avoid strenuous exercise, extensive sun or heat, and alcohol for 24 hours.

The FDA’s patient advice: seek a licensed health care provider with experience in dermatology or plastic surgery, trained to inject the face, using only FDA-approved fillers, with hyaluronidase on the premises. Needle-free pens are not approved. JUVÉDERM Ultra 2, 3, and 4 are not approved in the United States. BOTOX Cosmetic is not labeled for nasolabial folds.

What FDA labels, consent details, and vascular safeguards apply before filler?

Read the patient labeling for the specific syringe on the tray. JUVÉDERM VOLLURE XC is indicated for injection into the mid to deep dermis for correction of moderate to severe facial wrinkles and folds (such as nasolabial folds) in adults over the age of 21. Ultra XC and Ultra Plus XC carry the same fold indication. The FDA’s current dermal-filler page applies “22 years of age or older (over the age of 21)” across absorbable fillers. Safety in pregnancy, breastfeeding, and patients under 22 is unknown. Safety of combining fillers with neuromodulators, and of using these products repeatedly over a long period, has not been evaluated in a controlled clinical study.

Consent should name the product, lot, plane, planned volume, the 20 mL per 60 kg yearly cap, expected duration (FDA 6 to 12 months versus VOLLURE 18 months), 24-hour activity limits, and delayed inflammation after illness, vaccination, or dental work. Non-absorbable fillers are approved only for nasolabial folds and cheek acne scars and are hard to remove. Hyaluronic acid can be enzymatically reduced. Injectable silicone for wrinkles is not approved.

Unintended injection into a blood vessel can cause tissue necrosis, vision loss, or stroke. The FDA tells patients to seek immediate medical attention for unusual pain, vision changes, white-gray-blue skin near the injection site, or stroke signs during or shortly after the procedure. An ASDS evidence review ranks the nose, glabella, forehead, superior nasolabial fold, and medial cheek among the high-risk zones for occlusion and blindness. The angular artery runs in the territory a smile-line injection occupies. Stop at the first blanch, livedo, or disproportionate pain. Hyaluronidase flooding is the hyaluronic acid rescue; a clinic without it on the shelf is the wrong room.

If the filler result already looks wrong, what is fixable?

Hyaluronic acid that sits too high, too superficial, or in a lump can often be reduced with hyaluronidase. A bluish Tyndall tint, a visible ridge, or an overfilled “sausage” along the crease are the typical technical misses. Dayan’s retreatment volume of 0.6 mL is a reminder that less product, placed later, is sometimes the correction. Non-HA fillers and permanent gels do not reverse that way; the FDA warns that removal may require surgery or may be impossible.

Delayed firm nodules can appear weeks to more than a year later. A review of delayed-onset inflammatory reactions to hyaluronic acid notes a cluster around four months. The FDA lists delayed inflammation after viral illness, vaccination, or dental work. Those events belong back with the injector.

Prompt review is not optional for blanching, livedo, severe pain, white-gray-blue skin, visual change, or any stroke symptom. Lidocaine in the gel can mute pain, so color still matters. Infection, expanding redness, fever, draining wounds, or whole-body hives are same-day problems. If the skin is inflamed, the FDA says filler injection should wait.

How can the result be reviewed over years without defaulting to more product?

Photograph the face at rest and in a smile, same light, same distance, before any syringe, at two weeks, at six months, and at the labeled horizon. If the six-month photo still shows a trough because the original mark was a dehydration field, more gel will not invent a diagnosis. If the trough has returned and the scale is again moderate, Dayan’s trial is the maintenance math: 0.6 mL median after a 1.7 mL start.

Sunscreen at SPF 30 and a retinoid stay on the list. The FDA has not studied stacked, years-long filler use in a controlled trial; each additional milliliter is a new risk discussion, not a subscription. Re-run the three-way check (rest, smile, photo) before booking.

Korean clinic menus, which U.S. searchers ask about, lean on ultrasound, radiofrequency, polynucleotide “skin boosters,” and threads more than on packing a crease. A 2024 Annals of Dermatology survey found high-intensity focused ultrasound at high shot counts in 61.5 percent of respondents; Rejuran-type polynucleotides were used by 53.8 percent for fine lines and dryness, not as a U.S. fold fill. Niu and colleagues pooled thread-lift swelling in 35 percent of cases and a satisfaction drop from 98 percent immediately to 88 percent at six months.

When the next consult opens with a menu, ask which feature is being treated, which scale was used, which product label matches that feature, how many milliliters are planned against the 20 mL per 60 kg year, and where the hyaluronidase is. The FDA still has not evaluated long-term repeated filler use in a controlled clinical study.

FAQ

Why do I have smile lines at 14?

A crease from nose to mouth at 14 tracks facial growth more than sun damage. Three-dimensional studies of faces aged 7 to 17 show the midface still changing through early adolescence, so a nasolabial shadow can appear as bone and fat shift. The FDA has not established filler safety under 22.

Can smile-line wrinkles go away?

Fine dehydration lines can recede with moisture and a retinoid. A moderate-to-severe nasolabial fold on the five-point severity scale does not vanish with cream. Hyaluronic acid can reduce fold depth for months: the FDA overview gives 6 to 12 months, and the VOLLURE XC trial found 18-month correction in 59 percent of folds.

What causes smile lines?

Nasolabial folds form when lip-levator muscles press on nasolabial fat and deepen as deep medial cheek fat recedes, the mechanism Rohrich and Pessa described. Fine lines come from dryness and ultraviolet injury. Expression creases appear only with a smile. Phone cameras and side lighting can carve a sulcus that is faint in the mirror.

What do Koreans do for smile lines?

A 2024 Annals of Dermatology survey found Korean dermatologists using high-intensity focused ultrasound at high shot counts in 61.5 percent of respondents and radiofrequency in 46.2 percent. Polynucleotide injectables such as Rejuran were used by 53.8 percent for fine lines and dryness, which is skin quality, not fold filling.

How can I reduce smile lines naturally at home?

Apply a broad-spectrum sunscreen of SPF 30 or higher each morning, the American Academy of Dermatology’s daily minimum, even though the FDA still allows an aging-prevention claim at SPF 15. Use prescription tretinoin at night if a clinician agrees, plus a bland moisturizer. Home care changes surface texture, not fold volume.

How can I reduce smile lines at age 20?

At 20 the crease is often anatomy plus early ultraviolet injury. Fillers are labeled for adults over 21; the FDA states that safety under 22 is unknown. Start with SPF 30 and a retinoid. If a fold is visible at rest and graded moderate to severe, a licensed dermatologist or plastic surgeon can discuss hyaluronic acid.

Are the lines visible at rest, only in expression, or mainly in photos?

Check the face in a bathroom mirror at rest, then smile, then compare a flash selfie. A trough at rest is a nasolabial fold. A line only on smiling is an expression crease. A mark that appears mainly in wide-angle phone photos is often lighting and lens distortion. Treat the mark that exists in the room.