“Face beauty for video call” feature used to show your face more beautiful in active video calls. This feature is phone specific and currently available in VIVO phones.
By using this face beauty feature in your phone, you will get a face beauty option in supported video calling applications (WhatsApp, Line, Facebook Messenger, Zalo, Viber Messenger and BBM).
Now,
Face Beauty WhatsApp Video Call on Xiaomi Redmi Mi Phones:
Face beauty feature is mobile OS specific and currently Xiaomi(Redmi, Mi) phones with MIUI OS do not support such feature. So, you can not use the “face beauty for the video call” feature from Xiaomi(Redmi, Mi) phones.