Botox Isn’t Always Enough for the Elevens

Not every patient with deep lines between the eyebrows, often called the elevens, sees full correction from Botox alone. I explain to patients that Botox relaxes the muscles causing these lines to form during movement, but it can’t erase a line that has become etched into the skin at rest. The longer a line has been there, the more likely some trace remains even after the muscle activity is fully addressed.

Why I Wait to Evaluate

I ask patients to return 14 days after their Botox injection, once the full effect has set in, so I can evaluate the line at its most relaxed state. This waiting period matters. Judging too early, before Botox has fully taken effect, can lead to adding filler that isn’t actually needed.

Dynamic vs. Static: How I Tell the Difference

The deciding factor is whether the line is dynamic or static. Dynamic lines appear only with movement, when you frown or raise your eyebrows, and typically respond fully to Botox alone. Static lines are visible even when your face is completely relaxed. These are the lines most likely to need a second step.

I look for this distinction at the two week follow up by asking patients to frown, then relax completely, and comparing what’s visible in each state. If a hint of the line remains at rest, that’s a static component Botox alone won’t resolve.

Adding Filler: What It Involves

For patients with a static component remaining, I recommend a fine line dermal filler using hyaluronic acid, injected specifically to fill what the Botox left behind. This means a second appointment, typically spaced a couple of weeks after the Botox visit, and an added cost beyond the Botox treatment alone.

This combination isn't the right call for most patients. Many people see full correction from Botox by itself, especially when their lines are still primarily dynamic. I reserve the combination approach for longer standing or more pronounced elevens where a static component is clearly present at the two week check.

If you're not sure which category your lines fall into, that's exactly what the follow up visit is for. For more on how Botox and filler work together more broadly, see my Botox page.