Can Botox stop working after regular use?

I find it extremely rare for botox to stop working in patients, resistance is really rare. I suggest you speak to your dermatologist or plastic surgeon or try another product like dysport. Best, Dr. Emer.

 Thank you for your question. Although people to develop resistance to Botox, this is a very rare. I would recommend that your revisit with your injector. There are some variations of strength from one vial to another, or mild variations in the injection technique even for the same injector.   It could be something as simple as different steps being used in different injection sessions, leading to a different amount of weakening of specific targeted muscles.