Facial nerve damage after Ultherapy. Is this permanent?

Thank you for your question!
Although it is a less common side effect, irritation of peripheral sensory or motor nerves can happen. This can result in temporary patches of decreased sensation or some weakness of facial muscles (usually the muscle which pulls the corner of the mouth downward). When this occurs it is always temporary and usually resolves within three weeks. If it last longer than three weeks, contact your Ultherapy provider.