What are smile lines?
What are smile lines?
The term smile lines is commonly used to describe two types of facial creases:
- Nasolabial folds: These are the deeper lines that run from the sides of the nose to the corners of the mouth
- Accordion lines: These are short, curved vertical lines that radiate outward from the mouth or cheeks when smiling
Both types of lines are caused by repeated facial movement and natural ageing. While they are completely normal, they may become more pronounced over time, especially with volume loss or reduced skin elasticity. Many Australians seek to soften these lines as they become more permanent or create a tired appearance.

What causes smile lines and accordion lines?
Cause #1 – Natural facial movement
Smiling, laughing and speaking cause repeated folding in the same areas. As elasticity decreases, these creases can remain visible even when the face is at rest.
Cause #2 – Volume lossÂ
Mid-face fat and structural support naturally decline with age. This causes the skin to descend, deepening nasolabial folds and revealing accordion lines.
Cause #3 – Skin laxityÂ
Lower collagen and elastin levels reduce the skin’s ability to bounce back, contributing to permanent lines.
Cause #4 – Genetics
Thinner skin, flatter cheeks, or highly expressive features may increase the likelihood of visible creases.
Cause #5 – Sun exposure and lifestyleÂ
UV damage, smoking, dehydration, and poor nutrition all speed up collagen breakdown and wrinkle formation.
Why do I have smile lines or accordion lines and others don’t?
Factor #1 – Facial structure and fat distribution
People with naturally fuller cheeks often have more support for the skin, which can reduce fold depth.
Factor #2 – Genetics
Inherited traits like skin quality and expression patterns influence how and when lines develop.
Factor #3 – Ageing and movement
Even those with smooth skin early in life may develop lines over time due to repeated expression and environmental factors.
Factor #4 – Lifestyle habitsÂ
Chronic sun exposure, poor skincare, stress, and lack of hydration can contribute to the development and deepening of lines.
The impact of smile and accordion lines
While natural and often linked to joyful expressions, deep smile and accordion lines can affect the way people feel about their appearance. Common concerns include:
- A tired or aged look – Deeper lines can drag the face down or cause shadowing.
- Unwanted skin creasing – Accordion lines may remain etched into the skin, even when not smiling.
- Makeup settling in lines – Products may collect in folds, making lines more noticeable.
- Feeling self-conscious – Some people feel their smile lines age them or give a worn-out look.
Frequently Asked Questions
Q: What’s the best treatment for smile or accordion lines in Australia?
A: The most suitable approach depends on the depth and cause of the lines. Some people may benefit from surgical options, while others may respond well to non-surgical treatments that help support volume, improve skin firmness, and enhance overall texture. A consultation with a qualified healthcare professional will help determine what is appropriate for your individual needs and goals.
Q: Can I prevent accordion lines from forming?
A: Facial movement is a natural part of expression, so lines cannot be completely prevented. You can help slow their development by protecting your skin from UV exposure, maintaining hydration, and using skincare that supports collagen and elasticity. Consistent sun protection and a healthy lifestyle make the biggest difference over time.
Q: Are smile and accordion line treatments safe?
A: All procedures carry some level of risk. A qualified healthcare practitioner will assess your medical history, skin type, and treatment goals to recommend suitable options and explain potential risks and aftercare. Always choose a trained professional working within an accredited clinical environment.
Q: Will I lose my natural expressions?
A: No. When performed by a qualified practitioner, treatments are designed to soften static lines while maintaining natural facial movement and expression. The goal is to refresh your appearance, not change how you express yourself.
Q: Are these treatments covered by Medicare?
A: No. Cosmetic treatments for smile and accordion lines are not covered by Medicare in Australia.
