Smile Lines
Understanding Smile Lines (Nasolabial Folds)
Smile lines, also known as nasolabial folds, are the natural creases that extend from the sides of the nose to the corners of the mouth. These lines are a normal part of facial anatomy and are often more visible during expressions such as smiling or laughing.
In younger skin, smile lines are typically dynamic — appearing with movement and softening when the face relaxes. As the skin ages, gradual collagen and elastin decline, combined with changes in facial volume and soft tissue support, causes these lines to become more defined. Over time, they may remain visible even when the face is at rest.
The depth and appearance of smile lines vary from person to person. Some individuals notice only mild creasing, while others may develop more prominent folds due to structural factors, lifestyle influences, or genetic predisposition.
When Do Smile Lines Become More Noticeable?
Smile lines often begin as soft creases that appear only during facial expressions. Over time, collagen loss, volume depletion in the mid-face, and skin laxity can cause them to deepen and remain visible even at rest. This transition from dynamic to static lines typically becomes more pronounced from the mid-30s onwards.
Are Smile Lines the Same as Marionette Lines?
No. Smile lines (nasolabial folds) run from the nose to the corners of the mouth, while marionette lines extend downward from the mouth corners toward the chin. Both are influenced by similar factors — volume loss, skin laxity, and ageing — and may be treated together for a more comprehensive result.
Can Smile Lines Be Prevented?
While smile lines are a natural part of facial ageing, their progression can be slowed with consistent sun protection, a collagen-supporting skincare routine, adequate hydration, and early professional assessment. Addressing mid-face volume loss before folds deepen produces better long-term outcomes.
Why DW Aesthetic Clinic
Our practitioners take a holistic approach to smile line assessment — evaluating facial structure, volume distribution, and skin quality to recommend the most appropriate combination of treatments. Results are designed to look natural and refreshed, not overdone.
Common Causes of Smile Lines
Natural Ageing
As collagen and elastin production declines, the skin loses firmness and elasticity, making folds more noticeable over time.
Weight loss or gain
If you lose a lot of weight, you may have extra, looser skin. If you gain weight, you may have bigger cheeks. Both situations can accentuate nasolabial folds.
Sun damage
UV damage accelerates collagen breakdown, reducing skin resilience and increasing wrinkle formation.
Genetics
Some individuals are naturally predisposed to developing more prominent nasolabial folds.
Repetitive Facial Movements
Frequent smiling and expressive movement contribute to dynamic creasing, which may become static over time.
How to Reduce the Appearance of Smile Lines?
Maintain a Healthy Lifestyle
Protect Your Skin from Sun Exposure
Use Gentle Skincare
Support Skin Hydration
Be Mindful of Sleep Position
Consider Early Professional Assessment
Best Treatments for Smile Lines
HIFU Ultherapy Lifting
A non-invasive ultrasound treatment that lifts and tightens skin by stimulating collagen production deep beneath the surface.
XERF RF Tightening
A radiofrequency treatment designed to stimulate collagen production, improve skin firmness, and enhance facial contours by gently heating the deeper layers of the skin.
Rejuran
A skin healing treatment using polynucleotides (PDRN) to regenerate damaged tissue, stimulate repair, and restore youthful skin quality.
Juvelook
A dual-action injectable combining immediate HA hydration with long-term PDLLA collagen stimulation for comprehensive skin rejuvenation.
Frequently Asked Questions
What are smile lines?
Smile lines — also known as nasolabial folds — are the creases that run from the sides of the nose to the corners of the mouth. They are a natural result of facial expression and movement, but deepen over time as collagen declines, facial fat pads descend, and skin loses elasticity, causing the folds to remain visible even at rest.
What treatments address smile lines?
The most effective treatments depend on the depth of the fold and the underlying cause. Mid-face volume restoration (dermal fillers in the cheeks) is highly effective as it lifts and reduces the fold structurally. Direct filler placement along the nasolabial line can further soften deep folds. HIFU Ultherapy and XERF RF Tightening provide complementary lifting of the mid-face and improvement in skin firmness. Rejuran and Juvelook support collagen regeneration and skin quality to slow fold progression.
Is treatment for smile lines painful?
Topical numbing cream is applied prior to injectable treatments to ensure comfort. Filler injections use fine needles or cannulas and are generally well tolerated. HIFU and RF energy treatments may produce a warm or tingling sensation during delivery but are designed to be comfortable. Most clients find treatments manageable with minimal discomfort.
What should I expect after treatment?
Following dermal filler treatment, mild swelling and possible bruising in the treated area may occur, typically resolving within 3–7 days. Avoid alcohol, strenuous exercise, and excessive heat for 24 hours post-treatment. Injectable results are often visible immediately, with final results apparent once any swelling has fully settled. Energy-based treatment results develop gradually over 2–3 months.
How do I book a consultation?
You can book a consultation through our online booking system or contact the clinic directly. We will assess your nasolabial fold depth, mid-face volume, skin laxity, and overall facial structure to recommend the most effective and natural-looking treatment approach for you.
Book a consultation
A one on one consultation to personalise a series of treatments tailored for your needs and concerns. You will be able to learn everything about your skin condition.
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Specialising in advanced Korean skincare protocols, offering personalised treatment plans designed to enhance your natural beauty with care and precision.
Consult Aesthetic Nurse Vivian Choe