Botox can refine lip lines by relaxing muscles around the mouth, improving lipstick application and smoothness.

https://www.scribd.com/document/993414443/Marionette-Lines-and-Botox-Where-It-Helps-and-Where-It-Doesn-t-129229

Botox can refine lip lines by relaxing muscles around the mouth, improving lipstick application and smoothness.