Can Botox or filler actually CAUSE bunny lines on the nose?

Bunny lines are not directly caused by Botox, but there are two possibilities. One is that the person has Botox in other areas of the face, but not the bunny lines, leaving the bunny lines as the only lines you notice. The other is that the person has some compensation for having Botox between the brows and is using their bunny line muscles more than usual. Either way, the cure would be to treat the bunny lines with Botox. Andrew Campbell, M.D.Facial Rejuvenation SpecialistQuintessa Aesthetic Centers

Thank you for asking your question. When Botox is injected in some areas but not others, muscles in surrounding areas that haven’t been treated are recruited when attempting to make certain facial expressions. I have had some patients notice the untreated lines more after a botox treatment. In short, Botox and fillers do not cause bunny lines, however a patient may notice these lines more after botox injections to surrounding areas. I hope this helps to clarify your question. 

The wrinkles or lines such as Bunny lines and others are as a results of constant long term facial expression. Some times it could be due to over compensated reaction after neurotoxin injection of  the eyebrow depressor muscles. It is very essential to choose a provider with an excellent knowledge facial anatomy and knows the art of aesthetic injections.