Bunny lines.
Diagonal lines on the sides of the nose bridge that appear when laughing or scrunching the nose; treated with small doses of botulinum toxin.
Bunny lines in the lexicon: origin in the nasalis muscle, why they become noticeable after frown-line treatments, treatment, dose and risks.
A closer look.
Bunny lines are the fine diagonal lines that appear on the sides of the upper nose bridge when the nose is scrunched. The nasalis muscle is responsible; it pulls the nostrils and the skin over the bridge together. Over the years the lines remain visible at rest too.
They often become noticeable only after the frown lines have been treated: facial movement shifts to the nose. That is why bunny lines are usually treated together with the glabella – with one or two very small injections per side.
Placement is particularly important here because the elevators of the upper lip run close by; misplacement could temporarily change the smile. The dose is low and the effect lasts about three to four months.
This lexicon entry is general information and does not replace the medical consultation required under German law (§ 630e BGB).
At a glance.
A question about Bunny lines? Send us a short WhatsApp message – we usually reply the same working day.
Ask via WhatsAppFrequently asked questions.
Why am I only noticing these lines now?
After a frown-line treatment, expression shifts – the nose 'takes over'. That is normal and easy to treat.
Does it change my nose?
No, only the movement of the skin on the bridge is dampened.
Sources and further reading.
- NHS: Botox injections – patient information
- DGBT – German Society for Aesthetic Botulinum Toxin Therapy
- BfArM – Federal Institute for Drugs and Medical Devices
- European Medicines Agency (EMA)
- § 630e BGB – duty to inform before treatment (German Civil Code)
- AWMF – German clinical practice guidelines
External links open in a new window; their operators are responsible for their content. Medical responsibility for this page: Katayoun Mostaghimi, specialist in general medicine. Last updated: 2026-10-05.
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