FRIDAY, Feb. 17, 2017 (HealthDay News) — The most attractive lip surface area has been determined as representing a 53.5 percent increase from baseline, with an upper to lower lip ratio of 1:2, according to a study published online Feb. 16 in JAMA Facial Plastic Surgery.
Natalie A. Popenko, from the University of California in Irvine, and colleagues generated five varied lip surface areas using synthetic morph frontal digital images for the faces of 20 white women; the faces were ranked by 150 participants. In phase 2 of the study, four variants were created for 15 images by manipulating upper to lower lip ratios while maintaining the most attractive surface area from phase 1; 428 participants ranked 60 faces. The surface area from the most attractive faces was used to determine the total lip surface area relative to the lower facial third in phase 3.
The researchers found that the surface area determined to be the most attractive corresponded to a 53.5 percent increase in surface area from the original image. The 1:2 ratio of upper to lower lip was deemed the most attractive, with the highest mean and highest proportions of most attractive rankings. A lip surface area equal to 9.6 percent of the lower third of the face was judged the most attractive.
“Lip dimensions and ratios derived in this study may provide guidelines in improving overall facial aesthetics and have clinical relevance to the field of facial plastic surgery,” the authors write.
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