The fine vertical lines running from the lip border up towards the nose are among the hardest areas of the face to treat well and the easiest to treat badly. They are also badly named. Smoking makes them worse, but the muscle anatomy that creates them is present in everybody, and a substantial proportion of people who develop them have never smoked at all.
Understanding what is actually causing them in your face is what determines whether treatment helps or produces the overfilled upper lip that everybody recognises across a room.
What actually causes vertical lip lines
Four things combine. The first is the orbicularis oris, the circular muscle around the mouth, which contracts every time you speak, drink, purse or smile. Its fibres run perpendicular to the lip border, so repeated contraction folds the skin along that axis.
The second is the skin itself. The perioral skin is thin, has relatively few sebaceous glands and loses collagen and elastin steadily with age, so it recovers less well from folding. The third is loss of underlying support, since the maxilla resorbs with age and the fat compartments of the lower face reduce and descend. The fourth is external damage, principally ultraviolet exposure and smoking, both of which degrade collagen directly.
Smoking contributes through two routes at once, the repeated pursing action and the effect of tobacco smoke on skin, which is why the association became a name. It is not the whole explanation.
Assessment comes before product
A good assessment of this area looks at the lines at rest and on movement, at the volume and shape of the lip itself, at the length of the upper lip from nose to lip border, at the position of the corners of the mouth, and at the quality of the skin. Each points to a different intervention.
Lines visible only on pursing suggest a muscular contribution. Lines etched at rest suggest a skin quality problem. A long, flattened upper lip with a lost border suggests structural loss. Downturned corners and the folds below them are a separate problem, covered in our piece on marionette lines. Treating all of these as though they were one problem is why results in this area so often look wrong.
Which types of dermal filler suit this area
Most fillers used around the mouth in UK practice are hyaluronic acid based. Hyaluronic acid is a sugar molecule naturally present in skin, and its two great advantages here are that it attracts water, giving hydration as well as volume, and that it can be dissolved with an enzyme if the result is not what was intended. That reversibility is not a minor detail in an area this visible.
Products differ in how firmly they are cross-linked. Firmer, more structured gels are designed to hold shape and lift in areas with strong support, such as the cheekbone or jaw. Softer, less cross-linked gels spread more readily and integrate into thin, mobile tissue, which is what the perioral area needs. Using a structural product in fine lip lines is a common cause of visible lumps and a heavy, shelved upper lip.
Skin boosters are a different category again. Rather than adding shape, they deliver hyaluronic acid into the skin to improve hydration and quality over a course of sessions. For fine etched lines with reasonable underlying support, they often suit the area better than a structural filler does.
Where botulinum toxin fits, and its limits
Very small doses of botulinum toxin can be placed to reduce the pursing action of the muscle around the mouth. The technique demands restraint. The orbicularis oris controls speech, drinking through a straw, whistling and the shape of a smile, so too much product produces functional problems that last until it wears off. This is a treatment for a practitioner who does it regularly and is willing to underdose deliberately.
It is rarely a standalone answer. It reduces the folding force rather than restoring what has already been lost, which is why it is generally combined with something that addresses skin quality or support.
Resurfacing and skin quality
Where lines are etched into the skin at rest, treatments that act on the dermis often outperform volume. Options used in UK clinics include fractional laser resurfacing, medium depth chemical peels, microneedling with or without radiofrequency, and prescription topical retinoids used over months. These work by stimulating collagen remodelling, which takes time. Nobody gets a result in a fortnight.
They also carry their own considerations, particularly around pigmentation risk in deeper skin tones, sun exposure during recovery and downtime. Realistic timelines for each are set out in our recovery guide.
What goes wrong in this area
The classic failure is treating vertical lines by filling the body of the lip. Adding volume to a lip whose skin is already folding does not iron the lines out. It everts the lip, shortens the visible skin above it and produces the projected, rolled appearance that reads as obviously treated.
Other recognised problems include product placed too superficially, showing as a bluish tinge through thin skin, nodules where firm product was used in mobile tissue, and asymmetry that is more obvious here than anywhere else on the face because the mouth is the feature people watch when you speak. The perioral area also has a rich blood supply, so vascular complications, while rare, are a genuine risk requiring a practitioner with a plan, as covered in recognising a complication.
Cost and how long it lasts
In 2026, a syringe of hyaluronic acid filler in the UK commonly costs from about £250 to £600 depending on product, area and practitioner, with London clinics towards the top of that range. Perioral treatment often uses less than a full syringe. Skin booster courses are commonly priced from about £200 to £450 per session with two or three sessions in an initial course.
Filler in this area generally lasts less time than in static areas such as the cheek, commonly six to twelve months, because constant movement accelerates breakdown. For a local example of how a Chiswick practice presents its dermal filler and consultation information, see Dr Harry Clinic. Whichever clinic you consider, verify the practitioner on the relevant professional register first.
What actually prevents them getting worse
Daily broad spectrum sun protection, not smoking, and not repeatedly drinking through straws are the three interventions with the clearest rationale, and none of them cost £400. Skin that is protected from ultraviolet damage retains collagen for longer, and collagen is the tissue doing the work of resisting the fold. Prevention is unglamorous and it is the only part of this that compounds in your favour.
Sources
- Medicines and Healthcare products Regulatory Agency, the UK regulator for medicines and medical devices
- British Association of Dermatologists, patient information on skin and skin procedures
- Joint Council for Cosmetic Practitioners, the voluntary register for non-surgical practitioners
- Save Face, an accreditation register for non-surgical cosmetic practitioners
Frequently asked questions
Do you have to smoke to get smoker's lines?
No. The vertical lines around the mouth are produced by the circular muscle that purses the lips, combined with loss of collagen and underlying support. Smoking accelerates the process through repeated pursing and through damage to skin, but many people who have never smoked develop the same lines.
What is the best filler for lip lines?
A soft, less cross-linked hyaluronic acid gel or a skin booster, rather than a firm structural product designed to lift. Firm gels used in thin, mobile perioral tissue are a common cause of visible lumps and an unnaturally heavy upper lip. Hyaluronic acid also has the advantage of being dissolvable if the result is not right.
Will lip filler get rid of the lines above my lip?
Usually not, and it can make the area look worse. Adding volume to the lip body everts the lip and shortens the visible skin above it without addressing the folding that creates the lines. Etched lines respond better to treatments that improve skin quality, and dynamic lines to a very small dose of botulinum toxin.
How long does filler last around the mouth?
Commonly six to twelve months, which is shorter than in less mobile areas such as the cheekbone. Constant movement from speech and eating accelerates breakdown of the product. Skin quality treatments work on a different timescale, building gradually over months.
Can botulinum toxin be used around the mouth?
Yes, in very small doses, to reduce the pursing action of the muscle. It requires restraint, because the same muscle controls speech, drinking and the shape of your smile, and excessive dosing produces functional problems that persist until the effect wears off. It is best combined with a treatment that addresses skin quality.