Can Botox be injected into the wrinkles and between the eyebrows as well?

Lately, whenever I look in the mirror, I keep getting bothered by the vertical lines forming between my eyebrows. I used to think they were only slightly visible when I made facial expressions, but recently, it seems like faint lines remain even when I have a neutral expression. The wrinkles look even deeper, especially after I get tired or concentrate on work, perhaps because I tense my brows a lot. They are much clearer than I expected when I look at photos, so these days, I find myself checking that area first whenever I look at pictures.

So I'm looking into wrinkle Botox, but since it's my first time getting it, I have a lot of questions. My biggest concern is that my facial expressions might look too unnatural. I tend to use my facial expressions a lot in my daily life, so rather than feeling like my face isn't moving at all, I'd like to be able to make natural expressions while just slightly alleviating the wrinkles between my eyebrows. I'm also curious if the results vary significantly depending on the dosage of the wrinkle Botox or the injection site.

I would also like to know if the effects of wrinkle Botox appear immediately after the procedure. I am curious if it is best to allow a few days for the treatment if I have an important appointment or photo shoot, and I would like to know how long it usually takes for bruising or swelling to subside. For those who have actually received the treatment, please share your experiences regarding what was emphasized as the most important aspect during the initial consultation.