Will "v" shaped lines on forehead after Dysport treatment go away?

It can take 1-2 weeks to see the full effect from a Dysport treatment and it is possible that there would still be some mild swelling one day after the injection. Without examining you, it is difficult to say what might be causing the V lines that you see on your forehead, but I would wait a couple of weeks to see if it changes with time.  If you feel there is still an issue after two weeks, I would contact the physician who treated you.  

Hello and thank you for your question!  The results of your dysport will become noticeable 3-7 days post injection.  After day 14, I would recommend a follow-up with your board certified injector for any necessary touch up.  I hope this information helps and best of luck to you!

It is still too early to tell.  Dysport typically takes 3-7 days to begin working, and can take up to 14 days to see the full effect.  One day after injections is too soon to evaluate any results.  If, at 2 weeks, you have any concerns, follow-up with you injector.   Sometimes a touch up is necessary.  Best of Luck! Dr. Aldo:-)