If youโve ever noticed two vertical lines forming between your eyebrows, youโre not alone. These lines are commonly called โ11 linesโ because they often resemble the number 11 sitting between the brows.
Theyโre one of the most common types of expression lines and are often associated with repeated facial tension from squinting, concentrating, stress, or furrowing the brows over time.
The good news? There are ways to help soften the appearance of 11 lines while still embracing natural facial movement and expression.
What Are 11 Lines?
11 lines, also called glabellar lines, are the vertical lines that appear between the eyebrows. They usually begin as dynamic expression lines, meaning they appear when you move your face.
Over time, repeated facial movement, combined with natural collagen loss, can cause those lines to linger even when your face is at rest. At that point, theyโre considered static lines.
Some people notice them earlier than others depending on facial expressions, genetics, skin type, lifestyle habits, and overall skin health.
What Causes 11 Lines?
Several factors can contribute to the appearance of 11 lines, including:
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Repeated facial expressions like frowning or squinting
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Facial tension and muscle overuse
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Natural collagen and elastin decline with age
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Sun exposure
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Dehydration
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Smoking
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Stress
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Environmental damage
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Poor sleep habits and sleep positioning
One of the biggest contributors to 11 lines is repetitive movement. Every time you furrow your brows, the skin folds in the same place. Over time, those repeated movements can make expression lines appear deeper and more noticeable.
11 Lines vs. Forehead Lines: Whatโs the Difference?
Although theyโre often grouped together, forehead lines and 11 lines are slightly different.
Forehead Lines
Forehead lines are the horizontal lines that stretch across the forehead. Theyโre commonly caused by repeatedly raising the eyebrows.
11 Lines
11 lines are vertical lines between the eyebrows caused by repeated brow furrowing, concentrating, or squinting.
Many people experience both at the same time because the forehead and brow muscles work together during facial expression.
If youโre looking for placement-specific guidance, you can also read our post on using Frownies for forehead lines and expression lines.
Are 11 Lines Hereditary?
Genetics can absolutely play a role.
Some people naturally have stronger facial muscle movement, thinner skin, or facial structures that make 11 lines appear earlier or more prominently.
That said, genetics are only one piece of the puzzle. Lifestyle habits, skincare, hydration, sun protection, and facial tension patterns also influence how expression lines develop over time.
Dynamic vs. Static 11 Lines
Understanding the difference between dynamic and static lines can help explain why 11 lines tend to deepen, and even appear โpermenant,โ over time.
Dynamic Lines
These only appear during movement or facial expression.
For example:
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Furrowing your brows
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Squinting
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Concentrating
Static Lines
These remain visible even when your face is relaxed.
Static lines often develop gradually as skin loses elasticity and repeated movement continues over the years.
How Frownies Help Soften the Appearance of 11 Lines
Frownies Facial Patches have been used for over 130 years as a non-invasive wrinkle-smoothing approach for expression lines and forehead creases.
Frownies work by helping hold the skin in place overnight so the area can remain more relaxed while you sleep. Many people use them consistently as part of their nighttime skincare routine to support smoother-looking skin over time.
Unlike injectables, Frownies do not involve needles or toxins and can easily be applied at home.
For 11 lines specifically, many people use Frownies for the Forehead & Between the Eyes across the area between the brows and forehead to create broader support across the expression zone.
How to Apply Frownies for 11 lines
Applying Frownies for 11 lines is simple, and it can become an easy part of your beauty sleep routine.
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Prep Your Frownies
Separate the Frownies and lightly moisten the shiny side with Rose Water Hydrator, Calming Toner, or warm water. Let them sit until they become tacky.
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Smooth and Stick
Using one hand, gently smooth the skin between the brows. With the other hand, press the patch onto clean, dry skin. Slightly overlap the patches to create support across the full area.
For 11 lines, many people find the best results come from creating broader support across the area rather than placing one small patch directly on a single line.ย
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Wear Overnight
Leave the patches on for at least 3 hours or overnight while you sleep.ย
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Remove and Repeat
In the morning, dampen the patches with warm water to soften the adhesive, then gently remove. Use nightly for best results, then as needed for maintenance.
With consistent use over time, many people notice their 11 lines look softer, smoother, and more relaxed-looking by morning.
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