Botox injections typically work for three to four months before additional treatments are necessary. However, the effectiveness usually increases the more treatments you receive, so some patients may be able to wait as long as six months between appointments.

It’s recommended that you wait three to four months before having more injections to avoid overdoing it and weakening the muscles instead of relaxing them. 

Another reason it’s good to wait at least three months between treatments is because it gives the Botox time to fully take effect and for results to be noticeable. 

Botox treatments are also an investment, so waiting a few months between treatments can help to spread out the cost over time.

Overall, waiting three to four months between Botox injections is recommended to ensure that the treatment is effective, safe and provides natural-looking results.