Is it possible to get natural-looking under-eye fillers?

I became interested after reading reviews of under-eye fillers.

I am wondering if it is possible to have just a slight glimpse when smiling.

There were some cases where it was more noticeable than expected.

I am curious about the case where a natural change is desired.

I would like to know if the duration of maintenance is also on the short side.

I am also curious if this is a common area chosen for the first procedure.

The more I read the reviews, the more interested I become.