The MASI score is a validated test, calculated by subjective assessment of 3 factors: Area (A) of involvement, Darkness (D), and Homogeneity (H), with the forehead, right malar region, left malar region, and chin, corresponding to 30%, 30%, 30% and 10% of the total face, respectively. The area of involvement in each of these 4 areas is given a numeric value of 0 to 6 (0 = no involvement; 1 = <10%; 2 = 10%-29%; 3 = 30-49%; 4 = 50-69%; 5 = 70-89%; and 6 = 90-100%).