I totally agree! I don’t particularly have dark ‘circles’ as such mashallah, but I have slightly dark undereyes (like every desi) and Dior Skinflash really brightens up that eye area. It doesn’t feel heavy either. I use shade 002 
It can also work as a highlighter too! I use it on the bridge of my nose and cheekbones on special occasions. So overall, its a multi-use pen 