For fine wrinkles around the mouth, which consultation is needed: Botox or fillers?

Lately, when I look closely in the mirror, I am concerned that fine vertical wrinkles seem to have increased above my upper lip and around the corners of my mouth. They are usually faint, but the lines become more distinct when I purse my lips or speak. When I apply lip products, they settle into the wrinkles, making the corners of my mouth look dry and tired. I do not want my facial expressions to look awkward, so before deciding on a procedure, I would like to have the cause and depth of these wrinkles identified.

Does the approach to the consultation differ depending on whether wrinkles around the mouth are caused by dryness of the skin surface or repetitive muscle movements? I would like to know which methods to consider among Botox, Skin Botox, or fillers, and whether moisturizing or other care would be more suitable if a procedure is not absolutely necessary. I am also curious about the range of changes I can expect while maintaining a natural speaking and smiling expression.

If I proceed with the procedure, what are the recommended dosage, application area, timing for checking the effects, and duration of the results? I would also like to know the likelihood of pain, swelling, bruising, and a foreign body sensation or discomfort around the mouth. I would also like to be informed of precautions to take in daily life, such as eating, brushing teeth, and applying makeup, as well as the cost per session. Since this area varies greatly from person to person, I would like to make a decision after a medical professional personally examines my facial expressions and skin condition.