Can Botox injected for migraines have cosmetic benefits?

The areas and patterns of injection for Botox when used for migraines and cosmetic reasons are similar.  As a result, Botox injections for migraines may have a cosmetic effect.

Botox is known to relieve the specific nerves in the muscle groups it's injected into. So getting Botox injections for migraines is unlikely to affect wrinkles or change your face's appearance. You can receive both products as long as the total amount does not exceed 400 Units

When injecting botox for migraines, some of the injection sites are also commonly used sites for glabellar lines and forehead lines so yes in answering your qeestion there is a bit of overlap