Inquiry about botox between the eyebrows

I would like to ask those who have had botox between the eyebrows.

I'm considering getting a procedure because I've recently developed deep wrinkles when I frown.

I'm curious about the extent of the side effects, such as pain, swelling, and bruising.

Does the duration of effect vary greatly from person to person?

If you have any tips to recommend, please let me know.