Buccal fat is a rounded mass of fat tissue sitting deep in each cheek, between your jaw muscles and the outer surface of your cheek. Everyone has two of these fat pads, one on each side, and they play a bigger functional role than most people realize. The term has gained attention largely because of buccal fat removal surgery, but the structure itself is a normal, purposeful part of facial anatomy.
Where Buccal Fat Sits in Your Face
Each buccal fat pad is divided into three lobes: anterior, intermediate, and posterior. These lobes are held in place by six ligaments that anchor to the upper jawbone, the cheekbone, and the socket behind the eye. The fat pad fills the space between the muscles you use to chew and the muscles that move your facial expressions, sitting roughly in the hollow between your cheekbone and your lower jaw.
Because of its position, buccal fat is what gives the mid-cheek area its fullness. People with larger or more prominent buccal fat pads tend to have rounder faces, sometimes described as “chipmunk cheeks.” People with naturally smaller pads have more angular or sculpted-looking cheekbones. The size varies considerably from person to person and is largely genetic.
What Buccal Fat Actually Does
Buccal fat isn’t just filler. It works as a gliding surface that lets your chewing and facial expression muscles slide smoothly past each other. Without it, those muscles would grind against one another every time you chewed, spoke, or smiled. The fat pad also acts as a shock absorber during chewing and protects the nerves and blood vessels running through the space around your jaw.
In infants, the role is even more critical. Buccal fat is sometimes called the “suction pad” because it stabilizes the cheek wall during breastfeeding, counteracting the negative pressure created by suckling and preventing the cheek from collapsing inward. Premature or underdeveloped infants who have difficulty breastfeeding may, in part, have inadequately developed buccal fat pads contributing to the problem.
How Buccal Fat Changes With Age
Buccal fat naturally diminishes as you get older. The full, round cheeks common in your twenties gradually lose volume over the following decades, which is part of why faces look more angular and sometimes more hollow with age. This is a key consideration for anyone thinking about removal: the fat you have now won’t stay at the same volume forever. Removing it in your twenties or thirties means starting that thinning process from a lower baseline, which can lead to a gaunt or sunken appearance later in life.
Buccal Fat Removal Surgery
Buccal fat removal is a cosmetic procedure designed to slim the lower cheek area. It’s typically sought by people who feel their cheeks look disproportionately round or full relative to the rest of their face, even at a healthy body weight. The American Society of Plastic Surgeons notes that people with narrow faces or those past a certain age are generally not good candidates, since they’re already on track to lose cheek volume naturally.
The surgery is performed entirely through the inside of the mouth, so there are no visible scars on the face. The surgeon makes a small incision, roughly 1.5 centimeters, in the inner cheek lining after carefully identifying the parotid duct (the tube that delivers saliva from a major salivary gland). The incision goes through the cheek muscle, and then about 3 to 5 cubic centimeters of fat is gently pulled out from the buccal space, clamped, and cut free. The incision is closed with a couple of dissolvable stitches.
The procedure targets the buccal extension of the posterior lobe specifically. It does not remove all three lobes, which means a portion of the fat pad and its functional role remains intact.
Recovery and Results Timeline
Swelling is the most common aftereffect, reported in about 38% of patients in one large review. Difficulty fully opening the mouth (trismus) occurs in roughly 30% of cases, and about 19% report notable pain during recovery. These effects are temporary and resolve as healing progresses.
The tricky part is patience. Because the cheeks swell after surgery, your face will initially look fuller, not slimmer. Final results typically take several months to become visible as swelling resolves and the tissue settles into its new contour.
Risks and Complications
The buccal fat pad sits in a tight neighborhood. The facial nerve’s buccal branches run nearby, along with the facial artery, facial vein, and the parotid duct. Damage to any of these during surgery can cause problems.
The most serious complication is injury to the buccal branches of the facial nerve, which control movement around your mouth. In a systematic review and meta-analysis, facial nerve paralysis occurred in just under 1% of cases. While rare, this can impair your ability to move your lips and surrounding muscles normally. Other complications from the same analysis included asymmetry (about 12% of cases), infection (0.48%), hematoma (0.48%), and, in one case, air trapped under the skin on one side of the face.
Overcorrection is another concern. Removing too much fat can create a hollow, skeletal look that becomes more pronounced as natural age-related volume loss continues over the years. Unlike many cosmetic procedures, buccal fat removal is not easily reversible. The fat does not grow back, and restoring volume later typically requires injectable fillers or fat grafting.
Who Is and Isn’t a Good Candidate
The procedure works best for people who have genuinely prominent buccal fat pads creating a round lower-cheek appearance that doesn’t change with weight loss. Good candidates are typically younger adults with full faces who want more defined cheekbone contours.
People with already-slim faces, significant facial asymmetry, or those in their mid-forties and beyond are generally advised against it. At that age, natural fat loss is already underway, and removing more accelerates the hollowing process. Body weight matters too: if your cheek fullness fluctuates with your weight, the roundness may be caused by subcutaneous fat (the layer just beneath the skin) rather than the deeper buccal pad, and removal won’t address it.