Peri-Oral Lines: Why They Happen and How We Treat Them
Our faces tell the story of our lives — every smile, conversation, and expression leaves its mark over time. One area where these changes commonly appear is around the mouth.
Peri-oral lines — often referred to as “smoker’s lines” or upper lip lines — are one of the most frequent concerns we see at REclinic. Despite the nickname, these lines are extremely common in patients who have never smoked.
Understanding why they develop — and how they can be treated effectively — requires looking at the anatomy of the mouth, the ageing process, and the way facial muscles move.
In this blog, we’ll explore why these lines form and the treatment approaches we use to soften them while maintaining natural facial expression.
Why Are They Called “Smoker’s Lines”?
The term “smoker’s lines” became widely used because smoking involves repetitive lip pursing — a motion that can contribute to the formation of vertical wrinkles above the upper lip.
However, many people who develop peri-oral lines have never smoked. These wrinkles form due to a combination of factors, including:
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Repetitive muscle movement
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Natural ageing and collagen loss
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Changes in skin thickness and elasticity
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Gradual loss of structural support around the mouth
Smoking can accelerate these processes, but it is not the primary cause for most patients.
Why Women Develop Upper Lip Lines More Often
Although peri-oral lines can affect anyone, women tend to develop them earlier and more frequently than men. This difference is largely due to anatomical and physiological factors.
- Thinner Skin
Women generally have thinner skin in the upper lip area, making it more susceptible to creasing over time. - Lack of Facial Hair Support
Men benefit from facial hair follicles, which provide subtle structural support to the skin. Women lack this additional reinforcement, allowing lines to form more easily. - Reduced Subcutaneous Fat
The upper lip area naturally contains less fat than many other facial regions. In women, this support is often reduced further with age, allowing the skin to fold more easily into fine lines. - Muscle Activity of the Orbicularis Oris
The Orbicularis Oris muscle — often referred to as the Orbicularis Oris — is the circular muscle that surrounds the mouth. It is responsible for lip movement, including speaking, smiling, and pursing.
Many patients demonstrate hyperactivity of this muscle, meaning it contracts strongly and frequently. Research also suggests that women may engage the perioral muscles more during speech and expression, contributing to repeated skin folding.
Over time, these repeated movements gradually create vertical lines above the lip.
Treatment Options: Tailored to the Type of Lines
One of the most important aspects of treating peri-oral lines is recognising that not all lines are the same.
Treatment depends on whether the lines are dynamic (visible mainly during movement) or static (visible even at rest).
Mild Dynamic Lines
When lines appear mainly during speaking or lip movement, the most effective treatment is small, carefully placed doses of anti-wrinkle injections.
These injections gently relax the Orbicularis Oris muscle, reducing excessive contraction while still allowing natural lip movement.
The goal is softening — not freezing. Subtlety is essential in this area to maintain normal speech, expression, and lip function.
Moderate to Advanced or Static Lines
When lines remain visible even at rest, relaxing the muscle alone is often not enough.
In these cases, we usually take a combination approach, which may include:
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Anti-wrinkle injections to reduce muscle pull
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Dermal fillers to restore lost support and smooth the skin
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Skin hydration treatments to improve overall texture and elasticity
This layered strategy addresses both the cause of the lines (muscle activity) and the structural changes that occur with ageing.
Severe Cases: When Skin Quality Needs Attention
For deeper or more established lines, improving skin quality becomes just as important as restoring structure.
Treatments that stimulate collagen and improve tissue health can play an important role, including:
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Laser resurfacing
These procedures stimulate the skin’s natural repair processes, encouraging collagen production and improving elasticity — helping to soften lines from within.
The REclinic Approach: Natural, Balanced Results
Peri-oral lines are a multifactorial concern, meaning they rarely have a single cause. Successful treatment requires a careful assessment of:
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Muscle activity
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Volume loss
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Skin quality
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Overall facial harmony
There is no one-size-fits-all solution. The most natural results come from combining the right treatments in the right proportions, tailored to each patient.
Before and after treatment of upper lip lines using soft dermal filler and anti-wrinkle injections to restore support, improve hydration, and soften vertical wrinkles naturally.
At REclinic, our goal is always the same:
to soften signs of ageing while preserving natural expression and facial balance.
Thinking About Treating Upper Lip Lines?
If you’ve started noticing lines above your lip — even if you’ve never smoked — there are effective, subtle treatment options available.
A personalised consultation allows us to assess the underlying causes and design a treatment plan that works in harmony with your natural features.
Book your consultation with Dr Martina at REclinic to explore how we can help soften peri-oral lines while keeping your smile looking completely natural.
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