How Many Units of Dysport Should Be Given for Lines Between Eyes and Horizontal?

Please watch the video below. I try to explain some key aspects of the technicalities of using or getting botox. It really does make a difference who is injecting, how much and where it is injected. It is one of those treatments that unfortunately has become a commodity and it really requires a bit more of an artistic finesse approach ini my mind.  
We use the neuromodulators to target and soften the muscle groups without giving that frozen look.
Hope this helps,
Best of luck,
DrC

The glabella is what we call the vertical lines between the eyebrows. 50 units is adequate to start for the glabella, however, it depends upon the individual patient to really determine how many unit    s is sufficient.  As for the horizontal forehead lines, they typically require a lower dosage than the glabella. But, many things must be taken into consideration, such as the size of your forehead and the motion of it to accurately estimate the dosage.

The two areas you are referring to are the horizontal forehead lines and the vertical glabellar lines (11 lines) between the eyebrows.  Each location requires a different dose of neurotoxin, with the glabella typically requiring a higher dose.
40 units of dysport is a very low dose to try and treat both locations. Typically, the glabella will require on average 45-60 units alone, and the forehead another 15-45 units in most women (of course there are exceptions) depending on patient goals, anatomy, muscle strength, etc. This is what I do in most of my patients.
Therefore, 40 units of dysport may have been adequate to treat your horizontal forehead lines alone, but without seeing your forehead and how it moves I cannot make an accurate estimate of what dose would have been best for you.  
Good luck and I hope this answers your question.