A friend posts a photo from ten years ago, and your lips look pinker in it than they do in the mirror now. Or the bathroom light catches a row of fine vertical lines above your upper lip. Pull your lower lip down and you may find a brown band on the gum below your bottom teeth.
Lines and color both get filed under "smoker's lips," and once you quit, the question is whether they go away. They are two different problems, though, with different causes and different outlooks.
What people mean by "smoker's lips"
The first meaning is lines: the fine vertical creases around the mouth, sometimes called smoker's lines, that doctors call perioral wrinkles. When researchers graded photos of 143 adults in a 2016 study, their model for predicting how lined the mouth area was came down to age, sex, and years of smoking. Women were more affected than men.
The second meaning is color: lips and gums that have turned darker. The name smoker's melanosis comes from a 1977 Swedish study in which every patient with this kind of gum pigment turned out to be a smoker. The pigment is melanin, the same one that colors skin; a smoker's mouth can simply make more of it.
Why smoking is linked to lip lines
Some of the clearest evidence comes from 79 pairs of identical twins photographed at a festival in Ohio. When one twin smoked and the other did not, the smoker tended to have worse wrinkles on both lips. When both smoked but one had smoked at least five years longer, that twin had worse wrinkles on the lower lip. The rest of the face is covered in our guide to your face after quitting.
The mechanism is less certain. In small experiments, a single cigarette cut blood flow in the skin for a few minutes, and smoking lowered oxygen in the tissue beneath it for 30 to 50 minutes. Smokers' skin also showed more activity of the gene for MMP-1, an enzyme that breaks down collagen, even in buttock samples that smoke never touches. But a 2007 review of these mechanisms draws mostly on lab-dish and mouse experiments, so the chain from cigarette to wrinkle is plausible rather than proven.
Pursing your lips around a cigarette for years looks like an obvious culprit, but no study has tested it on its own, so treat it as a reasonable guess.
Smoking is also only one cause. Age, sun damage and loss of volume around the mouth are all thought to contribute, and women, whose skin here has fewer oil and sweat glands, tend to get more and deeper lines. People who never smoked get them too.
Why smoking darkens lips and gums
In a Swedish survey of 30,118 adults, pigment in the mouth turned up in 21.5% of smokers and 3.0% of people who used no tobacco. The most common spot was the gum at the front of the lower jaw.
Lips darken less often than gums. In a Japanese study of 213 men, smoking was linked far more strongly to gum pigment (an odds ratio of 17) than to lip pigment (5.6), and 95% of the men with dark lips also had dark gums.
How smoke pushes the mouth's pigment cells to make extra melanin is not settled. One idea, still a hypothesis, is that the pigment protects the mouth against chemicals in smoke.
Darker lips and gums are also normal for many people, especially those with darker skin. In a study of dental patients in Thailand and Malaysia, nearly all the Malay and Indian patients who used no tobacco had some oral pigment, and smokers had it on more surfaces. Quitting can only remove the part that smoking added.
Smoker's melanosis is harmless in itself. The catch is that other things darken the mouth too, including old amalgam fillings, some medicines and, rarely, melanoma. A dentist or doctor can usually tell them apart by looking, but sometimes needs a biopsy.
What changes after you quit
The pigment often fades, but slowly, and sometimes not completely. In the Swedish survey, people who had quit about three years earlier had pigment about as often as people who had never used tobacco. That compared different people at one moment rather than tracking the same people, but it is encouraging.
A Japanese study did follow the same people, using photos from dental checkups. In 129 people who quit, the share of measured gum sites with pigment fell by half, from about 26% to 13%, over an average of 4.5 years. People who kept smoking improved too, though less (about 27% to 20%). Halved is not the same as gone. A 1993 report described two patients whose pigment inside the cheeks disappeared after they cut down sharply on smoking.
Lines are a different story: we found no evidence that established lip lines reverse after quitting. Skin color can shift within weeks. A Tokyo quit-smoking clinic followed 84 patients, and those who quit had lighter, less red skin over 4 to 12 weeks than those who did not manage to. That is color, though, not wrinkles.
What quitting does for lines is stop adding to them. Both the twin study and the 2016 study tied lip lines to years of smoking, and that count stops the day you quit. Age and sun keep working on your skin, which is why sun protection matters from here on.
What helps in the meantime
Sun protection has the clearest support. The American Academy of Dermatology recommends a lip balm or lipstick with SPF 30 or higher, because skin cancer can form on the lips. Put it on whenever you go outside, cloudy days included, and reapply about every two hours. Beyond that, keep your lips moisturized with a plain balm.
We found no good evidence that the scrubs, creams and home remedies sold online lighten smoker's lips, so treat their before-and-after photos with suspicion.
Your phone camera is more useful. Once a month, photograph your lips, and your lower gums with the lip pulled down, in the same light and from the same distance, with filters off. Our skin article explains how to take photos you can actually compare.
Cosmetic treatments, if you want them
For pigment, dentists and dermatologists use lasers (Nd:YAG, diode, Er:YAG and CO2), but the evidence for lips is thin. One published case describes a 32-year-old man whose dark lips remained a year after he quit; a single session with a Q-switched Nd:YAG laser cleared them, and they had not returned seven months later. A systematic review of 10 studies on lasers for pigment in the mouth, gums and lips included, found that all reported success. But follow-up lasted at most two years, and in five of the studies pigment came back in 21% to 45% of cases.
For lines, the options include fillers, botulinum toxin, microneedling, fractional lasers and deep chemical peels, and a 2022 review favors combining them to fit your goals and the downtime you can accept. A systematic review found complications around the mouth mostly mild to moderate, with rare severe ones, and called the lack of regulation a concern.
Choose a dermatologist or another qualified clinician. If pigment is what bothers you, there is no rush: it may keep fading for years after you quit.
When to get your lips checked
The National Cancer Institute lists tobacco use and long-term sun exposure among the risk factors for lip and mouth cancer. See a dentist or doctor, rather than waiting, if you notice:
- a sore on the lip or in the mouth that has not healed after three weeks
- a white or red patch inside the mouth
- a lump on the lip or in the mouth
- a dark spot that is new, or one that is changing in size, shape or color
For dark spots, dermatologists use the ABCDEs: asymmetry, an irregular border, uneven color, a diameter above about 6 millimeters (though melanomas can be smaller), and evolving, meaning any change. Melanoma of the lip is rare; one Shanghai hospital gathered 48 cases over more than 20 years. But it happens, so a changing spot should not be written off as smoker's melanosis.
The NHS points out that these symptoms are very common and can have other causes. They are reasons to book an appointment, not to panic.
Nicotine replacement and your lips
If you use nicotine gum or lozenges, we found no good evidence that they darken lips or gums. A 2023 meta-analysis of 28 randomized trials of nicotine replacement used in the mouth found higher odds of mouth or throat irritation, soreness, and reflux or vomiting. Our guide to patches, gum and lozenges covers how to use them well.
Nicotine pouches sit against the gum, and a 2024 systematic review found that changes in the mouth lining where they sit were common, from slight wrinkling to white patches. Its three studies were small and all at high risk of bias, but a white patch that does not go away belongs on the checklist above. Our article on nicotine pouches covers the rest.
Snus (Swedish moist snuff), another product held against the gum, did not significantly raise the rate of oral pigment in the Swedish survey.
Keep the quit date as your reference point
Both changes play out over months and years, so your quit date is the most useful number you have. Smoke Tracker counts your smoke-free days and the money you have saved. Line that count up with your monthly photos and you know exactly how long the pigment has had to fade. For the rest of your mouth, see our article on teeth and gums after quitting.
"Smoker's lips" covers two problems. Dark lips and gums often fade slowly over months to years after quitting, though not always completely. Established lip lines are not known to reverse, but quitting stops adding to them. Wear SPF lip balm, photograph monthly, and see a dentist or doctor about a new or changing spot or a sore that will not heal.
Sources
- Chien AL, et al. Perioral wrinkles are associated with female gender, aging, and smoking: Development of a gender-specific photonumeric scale. Journal of the American Academy of Dermatology. 2016.
- Okada HC, et al. Facial changes caused by smoking: a comparison between smoking and nonsmoking identical twins. Plastic and Reconstructive Surgery. 2013.
- Axéll T, Hedin CA. Epidemiologic study of excessive oral melanin pigmentation with special reference to the influence of tobacco habits. Scandinavian Journal of Dental Research. 1982.
- Haresaku S, et al. Association of lip pigmentation with smoking and gingival melanin pigmentation. Oral Diseases. 2007.
- Kato T, et al. Measurement of Reduced Gingival Melanosis after Smoking Cessation: A Novel Analysis of Gingival Pigmentation Using Clinical Oral Photographs. International Journal of Environmental Research and Public Health. 2016.
- Gondak RO, et al. Oral pigmented lesions: Clinicopathologic features and review of the literature. Medicina Oral, Patología Oral y Cirugía Bucal. 2012.
- Shetty S, Pai S. Aesthetic Correction of Smoker's Lip Using 1064 nm Q-switched Neodymium-doped Yttrium Aluminium Garnet Laser. Journal of Cutaneous and Aesthetic Surgery. 2017.
- Abduljabbar T, et al. Efficacy of surgical laser therapy in the management of oral pigmented lesions: A systematic review. Journal of Photochemistry and Photobiology B: Biology. 2017.
- Sivaramakrishnan G, et al. Oral side effects of locally delivered nicotine replacement therapy: A meta-analysis of randomized controlled trials. International Journal of Dental Hygiene. 2023.
- Rungraungrayabkul D, et al. What is the impact of nicotine pouches on oral health: a systematic review. BMC Oral Health. 2024.
- NHS: Symptoms of mouth cancer
- American Academy of Dermatology: Sunscreen FAQs
This article is general information and does not replace medical or dental advice.
Common questions
- Do smoker's lips go away after you quit?
- It depends on which kind you mean. Darker lips and gums often fade slowly over months to years after quitting, though some pigment may remain. Fine lines around the mouth are not known to reverse, but quitting means smoking stops adding to them.
- How long does it take for dark lips and gums to lighten after quitting?
- There is no fixed timeline. In a large Swedish survey, oral pigment in former smokers was about as common as in non-users roughly three years after stopping, and in a Japanese study the gum pigment of people who quit halved over an average of 4.5 years. Some pigment can remain for years.
- Can smoker's lines around the mouth be treated?
- Yes. Options include fillers, botulinum toxin, microneedling, fractional lasers and deep chemical peels, often in combination. Complications are mostly mild to moderate but occasionally severe, so choose a dermatologist or another qualified clinician.
- Why do smokers' gums turn dark?
- Smoking appears to make the pigment cells in the mouth produce extra melanin, most often on the gum at the front of the lower jaw. This is called smoker's melanosis and is harmless in itself. Exactly how smoke triggers it is not settled, and naturally dark gums are common too, especially in people with darker skin.
- When does a dark spot or sore on the lip need checking?
- See a dentist or doctor about a sore on the lip or in the mouth that has not healed after three weeks, a white or red patch, a lump, or a dark spot that is new or changing in size, shape or color. These signs can have harmless causes, but they should be examined rather than watched.
This article is for informational purposes only and does not constitute medical advice. Health information is based on published research from organizations such as the CDC, WHO, and American Lung Association. Always consult a healthcare professional for personalized guidance on smoking cessation.
