Flower Mound Botox doctors

The botox that was injected several months ago to your glabella and lateral brow gave you a brow lift.  When botox wears off (usually takes 3-5 months), your skin will return to its starting position.  Botox has no permanent effect. 

But, remember, Botox does not wear off abruptly.  It wears off gradually.  I suspect that the reason why you are noticing more droop on the right is that most of the botox has worn off on the right, but there is some residual botox effect on the left.  Over the next several weeks, the botox on the left side will wear off as well, and your lids will return to the shape that you had prior to any injections. 

The only other thing to consider is whether you have had a stroke.  This can lead to asymmetric facial features.  But given your history and the focality of the defect (R eyelid droop), I think that your symptoms are likely due to the botox wearing off. 

The typical range is 8-20 units per side.  The amount of botox that is needed depends on how severe the wrinkles are and what your response has been in the past.  You've been really happy with 22-24 units, so tell the new person that you would prefer to start there.  More botox will result in a more "frozen" look;  it will also last longer, lenghtening the time that you can go between treatments.

Botox always wears off.  Different patients have different durations, but typically it wears off between 3 and 6 months.  Be patient for a while longer.