Table 1.

Variables used to describe the phenotypic features of the skin

Variables
Position of eyebrows
State of periorbital wrinkles
Right periorbital zone
Left periorbital zone
State of facial wrinkles
Right frontal zone
Left frontal zone
Evaluation of labiomental groove
Wrinkles and roughness
Length of wrinkles
Thickness of wrinkles
Depth of wrinkles
Pigmentation
Average value of melanin
Variation-heterogeneity index of the melanin distribution
Relative percentage variation
Method of distribution of melanin in the study area
Superficial vascular component
Average value of hemoglobin
Variation-heterogeneity index of the hemoglobin distribution
Relative percentage variation
Method of distribution of hemoglobin in the study area
Depth and length of the facial nasogenian groove
Depth and length of the labiomental groove
Roughness