Botox can refine a downturned mouth by relaxing depressor anguli oris, subtly lifting corners for a friendlier

https://www.scribd.com/document/1013447939/Botox-Cosmetic-Therapy-Combining-Modalities-225411

Botox can refine a downturned mouth by relaxing depressor anguli oris, subtly lifting corners for a friendlier, less tired resting expression.