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Facial overfilled syndrome: what the term means
Medically reviewed by Dr Sin Yong · Last reviewed · 4 min read
Published 9 October 2026 · Reviewed by Dr Sin Yong
Facial overfilled syndrome is the medical term for a face that looks heavy, rounded or altered in expression because dermal filler has been placed in excess or in the wrong layer, usually over repeated treatments. The everyday name is pillow face. It is most visible in a smile, and it can usually be reduced when the filler is hyaluronic acid.
Key facts
Also called
Pillow face; overfilled face
Cause
Excess or misplaced filler, often accumulated over repeated top-ups
Most visible
In a smile and in photographs
Correction
Selective, ultrasound-guided hyaluronidase when the filler is hyaluronic acid
Where the term comes from
The term appears in the peer-reviewed literature from 2020, when an anatomical study linked the heavy look of an overfilled mid-face in a smile to a transverse facial septum in the cheek (Cotofana, Dermatol Surg 2020). Later papers described it as underdiagnosed, caused by repeated incorrect filler placement and worse with expression and ageing (Lim, Dermatol Clin 2024), and named patterns including “pillow face”, “chipmunk cheeks” and “sunset eyes” (Lim, Wanitphakdeedecha and Yi, J Cosmet Dermatol 2024).
How a pillow face builds up over repeated top-ups. Schematic, not to scale.
Yes. Facial overfilled syndrome is the medical term; pillow face is the everyday name for the same appearance.
When the filler is hyaluronic acid, it can usually be reduced with selective hyaluronidase after ultrasound mapping. Collagen stimulators and fat are managed differently.
References
Cotofana S, et al. Anatomy behind the facial overfilled syndrome: the transverse facial septum. Dermatol Surg. 2020;46(1):e16-e22. doi:10.1097/DSS.0000000000002236. source
Lim T. Facial overfilled syndrome. Dermatol Clin. 2024;42(1):121-128. doi:10.1016/j.det.2023.06.007. source
Lim TS, Wanitphakdeedecha R, Yi KH. Exploring facial overfilled syndrome from the perspective of anatomy and the mismatched delivery of fillers. J Cosmet Dermatol. 2024;23(6):1964-1968. doi:10.1111/jocd.16244. source
