TABLE 1.

Skin aging scoring criteria.

Score	Skin aging scoring criteria
1–10	No folds or sagging, no thickening, longitudinal streaks running down the back and appearing or disappearing with movement; skin is free of pigmentation, shiny and soft; no hair loss, hair is abundant and shiny
11–20	Most of the skin has fine longitudinal stripes, and a few transverse fine stripes can appear or disappear with movement; a small amount of pigmentation exists in the skin, the degree of brightness and tenderness is slightly worse, the phenomenon of hair loss is present but not evident, the degree of vigorous and oily hair is worse
21–30	All fine longitudinal lines disappear; a small number of transverse shallow wrinkles appear, do not appear or disappear with movement; a large number of skin pigmentation, rougher, hair loss phenomenon aggravated, hair brightness significantly reduced
31–40	Persistence of a large number of horizontal roughness and deep wrinkles and noticeable sagging of the skin; severe skin pigmentation, apparent roughness, and dullness without shine; profound hair loss and no shine