Fig. 3: The photo illustrates the main proportions of golden ratios on the human face detected with the PhiMatrix™ software.

In orange colour the ratio “centre of pupil: bottom of teeth: bottom of chin”; in green colour “outer & inner edges of the eye: centre of nose”; in red, “outer edges of the lips: upper ridges of lips”; in light blue, “width of centre tooth: width of the second tooth”; in purple, “width of the eye: width of the iris”. (Source of the explanatory image: https://www.phimatrix.com/face-beauty-golden-ratio/).