I would like to inquire about the treatment cycle for wrinkle Botox.

I am writing to inquire as I am considering Botox for nasolabial folds. I am curious to know how much wrinkles that appear when smiling or making facial expressions, or deep nasolabial lines, actually improve when receiving Botox in the nasolabial area. I would also like to know if there are cases where Botox alone is ineffective, or if it needs to be combined with fillers or other procedures. I would also like to know when the effects typically appear and how long they last, as well as what the appropriate interval for follow-up treatments is. Please let me know if the recommended interval varies depending on the individual's wrinkle condition or skin thickness. Additionally, I am wondering if receiving Botox too frequently could lead to unnatural facial expressions or overall appearance. What should I check during the consultation before the procedure?