LED ring lights are used by many YouTubers for that halo in the eyes look. There are plenty of decent ones around. Here are 3 LED ring lights that work with your favorite smartphone:
Yongnuo YN508: a LED ring light with 3200-5600K bi-color adjustment. It has dimming and color temperature control via the app. Comes with a clamp for your mobile phone.
Neewer 14-inch Bi-Color LED Light: comes with a light stand, ball head, and everything you need to get started. It has a 360-degree rotatable phone holder.
SOCIALITE 18″ LED Ring Light: includes a smartphone/tablet adapter. It has a color temperature of 5500k. You can also use it with a DSLR with a heavy duty mount.
Have you found smarter LED ring lights? Please share them here.