Botox for lip enhancement?

Botox does not help increase the size or shape of the lips at all, if anything it can cause the muscles around the lips to decrease function and impact your ability to smile and chew.  It is sometimes used for the upper lip lines, but at your age, there is little reason for this and the results are minimal compared to using filler -- something like juvederm, restylane or belotero.  Seek a cosmetic dermatologist or plastic surgeon with experience in treating aging around the lip.  I wish you the best of luck, Dr. Emer.

BOTOX is used to weaken the muscles
of the forehead and the area around the eyes (crow's feet). It is not a filler,
so it is not used to directly make your lips bigger. Fillers such as hyaluronic
acids are used to enlarge the lips. BOTOX can be used in the lip region
judiciously in order to reduce lip wrinkling. Occasionally, the lip then
appears slightly larger as well because of the weakness of the upper lip muscle
after the treatment. It should not be used directly in the lip to enlarge the
lip. Discuss this issue with your surgeon or another facial enhancement
specialist. Best wishes!