You are correct to be cautious. The nose area (nasalis muscle) is adjacent to the levator labii superioris, which controls your upper lip. If the injector puts the toxin even slightly off, you could end up with a crooked smile or a feeling that you can't flare your nostrils. However, when done correctly by an expert, bunny lines are very treatable. The key is using a very small dose (typically 2-4 units per side) and injecting superficially. Not every injector is comfortable doing this area. You need to ask specifically: 'How many bunny line cases have you done?' If they hesitate, go elsewhere. A skilled injector will have you make a 'squinching' face, mark the muscle belly, and inject precisely. The effect usually lasts only 2-3 months because it's a small, active muscle.