Objective. To compare the cutaneous lip height at early and late postoperative periods and to objectively determine the average amount of lip height improvement during the first year of unilateral complete cleft lip repair using Cutting extended Mohler technique. Methods. In this prospective cohort study, 26 unilateral complete cleft patients and 50 noncleft subjects were included. Photographs were taken between 12 and 16 weeks (T1) and also taken between 12 and 13 months after surgery (T2). The cutaneous lip height distance (photogrammetric lip analysis) obtained in these two periods of time were measured and statistically analyzed. Results. The average lip heights were 24% ± 9% in T1 and 8% ± 6% in T2 (P < 0.01). The average lip height asymmetry in the noncleft individuals was 4.52% ± 1.89%. Conclusion. Since all principles to obtain a symmetrical Cupid's bow were performed, the postoperative pull-up of Cupid's bow is probably owed to the scar contracture, which improves by 2 times during the first year after surgery.