In what cases is lip filler recommended?

In the past, I used to think of lip fillers solely as a procedure to make the lips plumper. However, these days, it seems many people are looking into them for the purpose of naturally refining the lip shape or balancing the left and right sides.

I am interested to hear that the lips can change as we age, but when I actually think about getting a procedure, it is hard to make a decision. The lips are a part of the body where even a slight change can alter one's overall impression.

Is lip filler recommended for people with naturally thin lips? Or would it also be helpful for those with indistinct lip contours or reduced volume? I am wondering if it is possible to perform a procedure that naturally refines the lips while preserving their original shape, rather than simply making them larger.

Will I look awkward when smiling or speaking after getting lip fillers? I am worried because I’ve heard that a foreign body sensation might linger in the lips or that the shape could change over time. I would also like to know if it is better for first-timers to start with a small amount.

I am also curious about how long lip fillers typically last and how many days it takes for swelling or bruising to subside after the procedure. I would also like to know in advance if there is any inconvenience in eating or going out as usual.

What criteria are used during the consultation to determine if I am a candidate for lip fillers? I am curious if the decision is made by considering the overall balance of the face.

For those of you who have looked into lip filler procedures, what did you check most importantly during your consultation? Please share your thoughts on what to ask first if you are looking for a natural change.