Bunny lines are fine wrinkles that appear on the sides of the nose, typically when a person smiles, laughs, or scrunches their nose. These lines are caused by the repeated contraction of the nasalis muscle, a facial muscle responsible for movements of the nose. Over time, this repetitive movement can lead to the development of these characteristic creases.
Bunny lines are often subtle and may become more pronounced with age, as the skin loses elasticity and collagen production decreases. They are commonly seen as part of the natural expression pattern of the face but can be more noticeable in individuals who frequently engage in exaggerated facial expressions or after receiving certain treatments, such as Botox, which may shift muscle activity to the nose area. Treatments for bunny lines often involve targeted botulinum toxin injections, which help relax the nasalis muscle, smooth the lines, and maintain a natural facial appearance.