Typically it will take 1-2 days before you start to see any effect from your Botox treatment, and about a week before you will see the full effect. Give your Botox 1.5 - 2 weeks to fully "kick in", and then feel free to return to your provider if you feel something is amiss.
It is better to wait 1 week after botox injection. The line you see can be only the reaction of the injection itself and not the reaction at the product.
Botox takes about a week to "kick in" it is doubtful that at one day it is working. Best of luck.
I agree that it is too early to evaluate the Botox results. I would recommend a follow up visit in 10-14 days with your physician to assess your Botox results. Best wishes.
Any neurotoxin should be given at least 7 days prior to judging its efficacy. It can effect the different portions of the forehead muscle at different rates, causing an uneven appearance prior to that time. Reviewing before and after photos with the injector 1-2 weeks after injection will allow appropriate evaluation of your vertical forehead line, if it is still there at that visit.
It usually takes a few days to see the full effect from a Botox injection. I would wait for 5-10 days. If there is still some issue, please seek the advice of your physician.
It is too soon for you to worry about your Botox treatment. I would suggest you follow up with your surgeon in 10-14 days if your desired outcome is not achieved. Botox typically results in excellent consistent results.