2026-07-03
Neck Lines Part 2: Why Do Horizontal Neck Lines Form?
Horizontal neck lines are caused by a combination of skin structure, lifestyle habits like smartphone use, and aging, rather than just getting older.

When you look at the neck, you often see multiple horizontal lines.
These are known as **horizontal neck lines**.
Many people think of them as ‘wrinkles caused by aging,’
but the reality is a bit different.
In clinical practice 👉 we actually see them quite often in patients in their 20s.
In other words, rather than simple aging, horizontal neck lines
are formed by a combination of structural factors and lifestyle habits.
Reasons Why Horizontal Neck Lines Form
1️⃣ Neck Skin Structure
The skin on the neck has a slightly different structure compared to the face.
Characteristics
Thin skin

Fewer sebaceous glands
Lower collagen density
Because of this, even at the same age 👉 the neck often appears to age faster.
Another important characteristic is that the neck skin is an area with a lot of movement.
Because the skin constantly folds when you lift, lower, or turn your head,
wrinkles can easily take hold.
2️⃣ Congenital Neck Lines
This is a point that surprises many people.
Horizontal neck lines are often present from childhood.
This is because they are natural lines where the skin folds.
Therefore,
If you have a short neck
If your skin is thin
If you have less fat under the chin
The lines will be more visible.
In fact, in the clinic,
the most common cases are ‘lines that were originally there but deepened with age.’
3️⃣ Smartphones / Tech Neck
This is the biggest reason for the recent increase in horizontal neck lines.
When you bow your head, the skin on the front of your neck folds.
If this action is repeated,
👉 the wrinkles gradually deepen.
The following habits are particularly influential:
Prolonged smartphone use
Using a laptop
Reading posture
That is why the term ‘tech neck wrinkles’ exists.

4️⃣ Decreased Skin Elasticity
As we age, we experience
Decreased collagen
Decreased elastin
Skin sagging.
At this point, existing neck lines appear deeper.
In other words, the wrinkles do not suddenly appear;
👉 the original lines are simply accentuated.
5️⃣ Weight Changes
When you lose weight, the fat under the neck skin decreases.
During this process,
Increased skin laxity
Accentuated wrinkles may occur.
This is especially true for those who notice more visible neck lines after a diet.
Characteristics of Horizontal Neck Lines


Category | Nefertiti Lines | Horizontal Neck Lines |
Direction | Vertical | Horizontal |
Cause | Muscle | Skin |
Location | Jawline to Neck | Center of Neck |
In clinical practice, it is common to see both types present together.
Frequently Asked Questions from Patients
Can neck lines disappear?
Neck lines can be significantly softened to the point where they are barely noticeable with about 2 to 3 repeated treatments.
👉 Because the neck moves a lot, continuous maintenance is important.
Lifestyle Habits Are Also Important
Habits that help prevent neck lines:
Using smartphones at eye level
UV protection
Moisturizing the neck
It is especially important to apply sunscreen to your neck as well.
The neck is more susceptible to photoaging than the face.
Key Takeaways
Horizontal neck lines are
👉 not just a problem of aging, but a change caused by a combination of
Skin structure
Lifestyle habits
Decreased elasticity.
Therefore, treatment requires an approach that also improves the overall skin condition.
The neck lines series consists of 4 parts in total.
Neck Lines Series
1️⃣ Nefertiti Lines (Muscle-focused)
2️⃣ Horizontal Neck Lines (Skin structure)
3️⃣ Why the Neck Ages Faster Than the Face (Summary of causes)
4️⃣ Comprehensive Guide to Neck Line Treatments