Are deep smile lines good or bad? Safe ways to improve them

09/04/26
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Laugh lines are creases running from the sides of the nose down to the corners of the mouth – a very familiar feature on the face. However, as laugh lines deepen, many people begin to worry: are deep laugh lines good or bad, and do they affect aesthetics and feng shui? In this article, HBIO Clinic will help you understand the nature of deep laugh lines and how to safely improve them.

What are laugh lines?

Laugh lines (nasolabial folds) are two natural creases formed by facial muscle movements when smiling, talking, or eating. In young people, laugh lines are usually faint and only become noticeable when expressing emotions.

However, over time, due to the aging process, laugh lines tend to deepen, becoming more prominent even when not smiling. This is also why many people wonder whether deep laugh lines are good or bad, and whether they should be treated or left natural.

Rãnh cười là gì?
What are smile lines?

Are Deep Laugh Lines Good or Bad?

Are deep laugh lines good or bad? This is a sign that many people wonder about when looking at their face, because it’s not only related to appearance but is also discussed from many different perspectives.

From an Aesthetic Perspective

Deep laugh lines are generally not highly regarded. When laugh lines are deep:

  • The face looks older than its actual age
  • The skin is less firm and smooth, lacking vitality
  • The overall face easily gives the impression of fatigue and lack of freshness

Therefore, for those concerned about their appearance, the answer to the question of whether deep laugh lines are good or bad usually leans towards “bad” when considering only the youthfulness and harmony of the face.

However, the degree of “good” or “bad” also depends on the depth of the lines, facial structure, and personal style.

From a Physiognomy Perspective

According to East Asian physiognomy, laugh lines are also called the “legal lines.” The prevailing belief is that:

  • Clear, symmetrical smile lines indicate a responsible and principled person.
  • Deep smile lines that are symmetrical on both sides usually indicate someone experienced and worldly.
  • Excessively deep, asymmetrical, or extending smile lines down to the chin suggest potential emotional difficulties and setbacks in later life.

Therefore, according to physiognomy, whether deep smile lines are good or bad isn’t entirely negative, but if they are too deep and asymmetrical, they are still considered an unfavorable sign.

Rãnh cười sâu tốt hay xấu?
Are deep smile lines a good or bad thing?

Causes of Deeper Laugh Lines

To understand whether deep laugh lines are good or bad, it’s necessary to understand their causes:

  • Natural skin aging: After age 25-30, collagen and elastin decrease, causing the skin to lose elasticity, and laugh lines gradually deepen.
  • Decreased cheek fat tissue: Sunken cheeks and sagging cheeks make laugh lines more visible, creating a gaunt appearance.
  • Lifestyle habits: Laughing and talking excessively, sleeping on one side, rapid weight loss.
  • Environmental factors: Sunlight, dust, and prolonged stress also accelerate the aging process, causing laugh lines to deepen prematurely.

Current methods for improving deep laugh lines at HBIO Clinic

At HBIO Clinic, each solution for improving laugh lines is designed with safety, naturalness, and personalization in mind, based on the degree of laugh lines, cheek sagging, and facial structure of each client.

Filler Injections for Smile Lines

Filler injections are a popular choice due to their rapid results. Doctors use biocompatible fillers to fill in the volume of the sunken areas in the smile lines.

  • Noticeable filling of smile lines immediately after the procedure.
  • The face looks younger, softer, and more balanced.
  • The procedure is quick and minimally invasive.
  • The effects last an average of 12-18 months depending on individual factors.

This method is suitable for mild to moderate smile lines, where the skin is not yet significantly sagging.

At HBIO Clinic, the cost of filler injections for smile lines is 3,000,000 VND.

Tiêm filler rãnh cười
Filler injections for smile lines

Thread Lift for Smile Lines

Thread lift for smile lines is a solution to lift sagging skin tissue, directly addressing the cause of deepening smile lines. Doctors use specialized biodegradable threads to lift the subcutaneous tissue, while simultaneously stimulating the body’s natural collagen production.

  • It helps lift sagging cheeks, gradually reducing smile lines over time.
  • It doesn’t fill in wrinkles, so the face retains its natural look.
  • It stimulates collagen regeneration and improves skin firmness
  • The effects last longer than fillers, depending on the type of thread and individual characteristics.

Thread lift is particularly suitable for clients with deep smile lines due to aging and sagging facial tissue. The cost of thread lift for smile lines at HBIO Clinic is 12,000,000 VND.

Căng chỉ rãnh cười
Thread lift for smile lines

Facial Lifting and Rejuvenation Technology

Modern lifting technologies deeply affect the supporting muscle layer, thereby improving sagging – an indirect cause of deep smile lines.

  • Lifts the cheek area, limiting skin sagging into smile lines.
  • Improves smile lines naturally, without excessive filling.
  • Firms the skin, resulting in a more toned and radiant face.

This method is suitable for clients who want overall facial rejuvenation and gentle, long-lasting improvement of smile lines.

At HBIO Clinic, clients always receive thorough examination and consultation from specialist doctors before choosing a method. Combining the right techniques will help improve smile lines harmoniously and naturally, avoiding a stiff or unbalanced appearance after the procedure.

The cost of Hifu facial lifting at HBIO Clinic is 5,000,000-10,000,000 VND.

Công nghệ nâng cơ trẻ hóa
Skin lifting and rejuvenation technology

So, are deep smile lines good or bad? The answer isn’t entirely absolute. From a modern aesthetic perspective, deep smile lines often make the face look older. However, from a physiognomy and personal perspective, smile lines can still be considered attractive if they are harmonious with the features. The most important thing is that you feel confident with your appearance. If deep smile lines are causing you concern, HBIO Clinic is ready to support you with safe, subtle, and personalized rejuvenation solutions for each individual’s face.


Dr. Thai Nguyen – Founder and Medical Director of HBIO Clinic. As an expert in aesthetic dermatology, she regularly shares in-depth knowledge and practical experience to provide valuable and insightful information for those seeking better skin health.