Could someone explain how to achieve this type of circular highlight in the eyes? My camera is a Sony a6000.

Edit: I am wondering what smoothing and blurring filters or some sort of technique they are using to remove any blemishes on the face. But the skin still looks natural, you can see the pores, and the lighting is still realistic. I find when using various applications to remove skin imperfections it kind of looks more blurred and a lot of detail is lost.