When do I start seeing the effects of Botox on my forehead and between my eyebrows?

I am concerned because deep wrinkles have started to form between my eyebrows and on my forehead, perhaps due to a habit of frowning frequently lately. I found the Maypure Community to plan a Botox treatment, as I want to smooth out the wrinkles before they deepen further.

I would like to know the onset time—typically how many days after the injection does the Botox effect of smoothing wrinkles begin to appear with the naked eye? I am also curious about the average duration of the effect; how many months does the smooth skin condition last after a single injection? Since the purpose is wrinkle prevention, I am also wondering if it is advisable to continue getting injections periodically.

I am slightly concerned about potential side effects, such as a heavy forehead or difficulty opening my eyes immediately after the injection. I would also like to ask about the director's expertise and how they perform the Botox procedure to ensure a natural look.