Will waiting 13 weeks instead of 11 weeks for Botox make a significant difference?

Two extra weeks between botox sessions should not have a significant difference. If you like your injector, it is always best to stick with them!

Thank you for your question. Botox injections are generally administered every 3-4 months. Since the 13-week mark falls within this timeframe, waiting an additional two weeks should not cause any significant difference.
I recommend scheduling an in-person consultation with an experienced expert injector. They will be able to answer any questions you have and ensure you maintain an adequate injection schedule.