When I smile, only one corner of my mouth goes up, making my mouth look asymmetrical. What kind of treatment should I get for this? First of all, my face shape is basically asymmetric, so I got Botox on my chin, but it doesn't seem to have any effect. There are Botox for mouth correction or something like that. Can I get Botox on the corners of my mouth? It's so stressful because every time I laugh, I laugh. ㅠㅠ