Botox to Fix Crooked Smile Goes Wrong

You have had several injections over varying periods of time. Therefore, Botox in each area has a certain lifespan. Even if you continue to try to balance the asymmetry, and can by some miracle achieve symmetry without further paralysis of the periorbital muscles, as each of the injections goes away, the asymmetry will return in a bizarre fashion.
We have seen your problem often. The best solution is to allow all the Botox to go away, then retreat with a top notch doctor. Also stick to one doctor who can know your facial expression intimately, including all its quirks and asymmetries, rather than go to several doctors. Your doctor should have an intimate knowledge of the anatomy of facial nerves and their target muscles. From your description there are several branches that have already been affected. The separate durations of action of each injection (3 months each) will just prolong your asymmetry problem as they go away.

We're sorry that you have had to experience a bad Botox outcome. Unfortunately, we think your best bet is to live with it as it is until the Botox wears off. Chasing perfect symmetry after several injections is a recipe for disappointment. Your second practitioner probably underdosed you the second time for fear of relaxing both sides and making it impossible to smile!
Our suggestion would be to wait a couple months until the Botox wears off and start from scratch with your original injector. The good news is that Botox wears off faster around the mouth than anywhere else on the face because of the constant movement. Good luck.

As all my colleagues have stated the good thing is that Botox is not permanent.
As stated, the best is to wait it out.
The alternative is to undergo more injection on the left to drop the lip which most people would consider undesireable but would give you symmetry. You risk having a weak smile with little movement. Another downside is that you risk having the weakness last beyond the time that the right returns. It is difficult to tell the time of your right sided injection but if that is over two months I would wait it out.
I know this is difficult for you to appreciate but injecting botox even by the same physician in the same area with the same dose can have differing effects each time you inject it. It is not too dissimilar to laying down an ink spot and predicting it will be the same each time. With botox the diffusion is even more complex because it is 3 dimensional.