Bichectomy is plastic surgery that aims to thin the face, and what is basically done is to remove the small bags of fat (bichat balls) accumulated on both sides of the face, leaving the cheeks less bulky, highlighting the apple cheeks and harmonizing the face.
Surgery to thin the face is normally done under local anesthesia and the cuts (of less than 5 mm) are made inside the mouth leaving no visible scar on the face.