Fine Lines Around the Mouth: Causes and Treatment
A clinical guide to perioral fine lines: what causes them, why they are among the harder lines to treat, and what approaches produce genuine improvement. Written by Lydia Griffin, Clinic Director at The London Road Clinic, Newark.
Published 21 May 2026
Following an in-person consultation with our prescribing clinician, in line with current GMC, NMC, GPhC and GDC guidance.
Fine lines around the mouth are among the most commonly raised concerns in consultations, and among the most honestly difficult to treat. They develop through a combination of repeated muscle movement, collagen loss, volume change in the perioral area, and UV damage, and addressing them well means understanding which of those drivers is most prominent in each patient.
What perioral lines are and where they come from
Perioral lines is the clinical term for the fine lines that develop around the mouth and lips. They include the vertical lines that radiate outward from the lip border (often called lip lines or, colloquially, smoker’s lines), the lines at the corners of the mouth, and in some patients, finer lines on the lip surface itself.
The colloquial term “smoker’s lines” reflects one of the causes accurately but gives a misleading impression that these lines are exclusive to smokers. They are not. They develop in non-smokers through the same combination of collagen loss, UV damage, and repeated movement of the orbicularis oris muscle (the circular muscle that encircles the mouth) that produces the lip-pursing, kissing, and speaking movements we all make thousands of times daily.
Smoking accelerates all of these. The direct cytotoxic effect of cigarette smoke on collagen, the repetitive lip-pursing movement of smoking, the vasoconstriction that reduces blood supply to the skin, and the oxidative stress from free radicals all compound to produce more pronounced and earlier-onset perioral lines in smokers. Stopping smoking has one of the most significant effects on skin quality and perioral appearance of any single lifestyle change.
Why these lines are harder to treat
The perioral area presents a specific clinical challenge that distinguishes it from most other areas of facial concern.
High movement. The orbicularis oris muscle is in near-constant use. Every word spoken, every sip taken, every expression made engages it. Lines in high-movement areas are reinforced continuously in a way that lines elsewhere on the face are not. Collagen laid down by any treatment is working against constant mechanical stress.
Thin skin. The skin around the lips is thinner than most facial skin. This makes the lines more visible for a given amount of collagen loss, and it limits the aggressive treatments that can be applied without risk.
Proximity to the lip border. Energy-based treatments and injectable treatments in this area require precision and restraint. The lip border (vermillion border) is a defining feature of facial anatomy; anything that alters it, blurs it, or produces swelling adjacent to it can affect the overall aesthetic of the lower face in ways that need careful management.
These challenges do not mean treatment is not worthwhile. They mean that expectations need to be calibrated, and that a combination approach over time produces more consistent results than any single treatment.
The main causes and which respond to treatment
Collagen and elastin loss
As collagen and elastin in the perioral dermis decline with age, the structural support for the overlying skin reduces. Lines that were once expression-dependent become static: visible even when the face is at rest. This is the most universal driver and the one most directly addressed by collagen-stimulating treatments.
Understanding how collagen and elastin work helps explain why treatment effects take weeks to develop and why maintenance is needed over time.
Volume loss in the perioral area
The perioral area loses structural support not just from dermal collagen decline but from volume loss in the deeper tissues below and around the mouth. As this volume reduces, the skin above it has less support and folds more easily with movement. The facial volume loss guide covers how volume changes across the face.
Volume loss in this context is relevant because it means some perioral lines have a structural component that collagen-stimulating treatments address only partially. Restoring volume in the perioral area with dermal filler, assessed and placed carefully, can improve the appearance of lines that sit above tissue that has thinned structurally.
UV damage
Cumulative UV exposure drives collagen breakdown in the perioral area exactly as it does elsewhere on the face. The lower face frequently receives less diligent SPF application than the forehead and cheeks, and the lip area in particular is often neglected. Daily SPF applied to the full lower face, including close to the lip border, is the most consistent preventive action. See the sun damage and SPF guide.
Muscle movement and skin thinning
The lines that appear directly adjacent to the lip border and radiate outward reflect the lip-pursing action of the orbicularis oris more than any other factor. Reducing the intensity of that muscle movement reduces the mechanical stress on the overlying skin. Anti-wrinkle injections placed at low doses around the perioral area can soften the muscle’s action without affecting speaking or eating function, reducing the reinforcement of these lines over time.
Treatment approaches: an honest hierarchy
Skincare as foundation
A retinoid applied consistently to the perioral area is the most evidence-based topical approach and the one most frequently absent in patients presenting with this concern. Many patients apply retinoid to the cheeks and forehead and stop at the lip border. Applied carefully into the perioral area, retinoids improve cell turnover and stimulate collagen production over a six-to-twelve-month programme. The result is not dramatic month-on-month, but over a year of consistent use it is measurable.
SPF applied daily to the full lower face, including the perioral area, is non-negotiable for both prevention and to support any treatment being undertaken.
Anti-wrinkle injections: the muscle component
Anti-wrinkle injections placed in micro-doses around the lip border can reduce the contractile strength of the orbicularis oris muscle in a targeted way, decreasing the mechanical stress that reinforces vertical lip lines. This is a technique that requires precision and conservative dosing: the muscle that surrounds the mouth is also the muscle used for speaking, drinking, and eating, and over-treatment produces visible functional effects.
This is a prescription-only medicine treatment, administered following an in-person consultation with our prescribing clinician, in line with current GMC, NMC, GPhC and GDC guidance. Dosing, placement and suitability are determined at consultation. Not every patient presenting with perioral lines is a candidate for this approach.
Dermal filler: the volume and border component
Fine dermal filler placed at or along the vermillion border (lip border) can restore definition lost as the border becomes less distinct with age, and filler placed in the perioral tissues can support skin that has lost structural volume below it. This is distinct from lip augmentation, though the two are sometimes combined.
Perioral filler requires clinical assessment of the lip anatomy and the volume deficit to place appropriately. Where the lines reflect genuine volume loss in the perioral area, addressing the structural deficit directly can improve what surface treatments alone cannot.
Fractora: the remodelling approach
For patients with more pronounced perioral lines and crepey skin around the mouth that reflects significant collagen loss, Fractora RF microneedling has an evidence base in this area specifically. The perioral anatomy requires adjusted technique and conservative parameters, but the thermal remodelling stimulus from Fractora produces more meaningful structural improvement than standard microneedling in this location. The full treatment detail is in the Fractora patient guide.
This involves planned recovery of three to seven days and should be assessed at consultation based on skin type and the degree of concern.
Chemical peels: the surface component
A medium-depth chemical peel applied carefully to the perioral area can improve the texture and surface quality of the skin around the mouth, reducing the appearance of fine lines associated with skin quality decline. The perioral skin is thin and the chest proximity means peel depth selection here requires experience. See the chemical peels patient guide for context on peel types and depths.
Profhilo: the skin quality component
For fine lines around the mouth that reflect skin quality and hydration decline rather than deep structural change, Profhilo bio-remodelling improves skin quality in the perioral area alongside its primary treatment zone. It does not address lines driven by muscle movement or structural volume loss directly, but where skin quality is a significant component of the concern, it adds value as part of a broader programme. Read the Profhilo patient guide for the full detail.
What the treatment programme looks like in practice
Because perioral lines are driven by multiple factors simultaneously, the most effective approach is usually a combination of treatments addressing different components in sequence:
- Skincare foundation first: retinoid and SPF consistently to the perioral area.
- Collagen stimulation: Fractora for patients with more significant concerns, or microneedling with exosome enhancement for those with milder concerns or who need low downtime.
- Muscle component where appropriate: anti-wrinkle injections at low dose, assessed and placed at consultation.
- Volume or border definition where appropriate: perioral filler, assessed at consultation.
- Maintenance: ongoing skincare, regular SPF, and planned maintenance treatment intervals.
This is not a programme every patient needs in full. Many patients with early or mild perioral lines respond well to skincare improvement and Profhilo alone. The treatment plan is built at consultation around the concern and the patient’s priorities.
Honest expectations
Perioral lines are one of the areas where I am most careful to be direct with patients about what to expect, because they attract treatments that promise more than they consistently deliver.
No single treatment eliminates deep-set perioral lines in a person who has significant UV damage history, ongoing muscle movement, and years of structural collagen loss. What a well-planned programme produces is a meaningful reduction in line visibility, improved skin quality and texture in the area, and slower future development, maintained over time. That is a genuinely worthwhile outcome. It is also an ongoing commitment rather than a one-time correction.
The ageing well philosophy at The London Road Clinic is relevant here: treating perioral concerns well means managing them intelligently over time, not chasing a result that the biology of the area will not sustain.
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