What Are ’11 Lines,’ and Is There Actually Anything You Can Do About Them?

If you’ve ever caught your reflection mid-frown and noticed two vertical grooves sitting right between your eyebrows, you’ve met your “11 lines” — named, unimaginatively but accurately, for looking like the number 11.

What’s actually causing them

Those lines come from repeated contraction of the corrugator and procerus muscles — the ones that pull your brows together when you squint, concentrate, or frown. Do that enough thousands of times over a few decades and the skin starts holding the crease even at rest. Genetics, sun exposure, and how much collagen your skin has left all factor into how deep they get and how early.

What tends to actually help

• Sunscreen, daily, not just at the beach. UV exposure breaks down collagen faster than almost anything else you can control, and it’s cumulative.
• A retinoid. Prescription or over-the-counter retinol is one of the better-studied topical options for stimulating collagen production over time — it’s slow, not a quick fix, and can irritate skin at first.
• Hydration and barrier support. A well-moisturized layer of skin makes fine lines look shallower even before anything structural changes.
• Noticing your own frown habit. Some people genuinely soften the lines just by catching themselves mid-squint and relaxing the muscle — it won’t undo years of etching, but it can slow new depth from forming.

The in-office options

Dermatologists commonly treat 11 lines with neuromodulator injections (the frown-line muscles are literally what these treatments were first approved for) or with fillers to soften an already-etched groove. Both are real medical procedures with real risks and costs, and results vary by provider and individual anatomy — this is a conversation for a board-certified dermatologist, not a home experiment.

There’s no shame in either direction here — treating them, ignoring them, or leaning into sunscreen and calling it a day. They’re a normal feature of an expressive face, not a health problem to solve.

Kurt Greiner

Kurt is a digital strategist and IT professional blending emerging technology with practical application to help businesses and individuals streamline their digital presence. His current work focuses on the intersection of intentional living and technological resilience, exploring how individuals can leverage modern tools to navigate the second half of life with purpose.