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Book AppointmentYes, it can happen. Brow ptosis, the medical term for eyebrow drooping after Botox, occurs in roughly 1 to 5 percent of patients according to published research. It’s an uncommon side effect, but it’s real, and I want my patients to understand why it happens and what to expect if it does.
Why it happens
Botox works by relaxing the muscles that create movement-related wrinkles. In the forehead, that means weakening the frontalis muscle. The frontalis is also what holds the eyebrows up. If Botox is placed too low on the forehead, too close to the brow, or migrates from where it was injected, it can weaken the muscle enough to let the brow drop rather than just smoothing the lines above it.
What it looks like, and how long it lasts
Brow ptosis usually shows up within the first one to two weeks after treatment, once the Botox has taken full effect. It resolves on its own as the Botox wears off, typically within a few weeks to a couple of months. It’s not permanent.
How I minimize the risk
I inject with attention to each patient’s specific forehead anatomy and muscle strength rather than using a one-size-fits-all pattern. Smaller, well-placed doses distributed across the relevant muscles, rather than one large dose in a single spot, reduce the chance of affecting muscles I’m not trying to treat. Where a patient has particularly strong forehead muscles or a heavier brow at baseline, I factor that into dosing and placement before I inject, not after.
If it happens anyway
In some cases, a small, carefully placed touch-up injection to a different muscle can help rebalance the brow while the original effect fades. This isn’t right for every patient, and it’s something I evaluate case by case at a follow-up visit rather than rush into.
If you notice a change in your brow position after Botox, it’s worth coming in so I can take a look and confirm what’s going on, rather than waiting it out and wondering.
What increases the risk of eyebrow drooping after Botox?
The main factors are injection placement, dose, and individual anatomy. Patients with strong forehead muscles or a naturally heavier brow often need more careful dosing, since too much Botox placed too low increases the risk.
How do you prevent eyebrow drooping when injecting?
I map each patient’s forehead anatomy before injecting and use smaller, targeted doses across the relevant muscles rather than one large dose in a single spot. This keeps the effect where I want it and away from the muscles holding up the brow.
How common is eyebrow drooping after Botox?
Research puts it at roughly 1 to 5 percent of patients. It’s uncommon, and experienced injectors see it less often than that range suggests.
Can fillers cause the same kind of eyebrow drooping?
Not in the same way. Fillers can occasionally affect brow shape or position if placed too close to the area, but the mechanism is different from Botox, which works by relaxing muscle rather than adding volume.
What should I do if my eyebrows droop after Botox?
Come in so I can take a look. In most cases it resolves on its own within a few weeks to a couple of months as the Botox wears off. Depending on what I see, a small touch-up injection may help rebalance the brow sooner.
