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. 2018 Aug 1;11(8):29–34.

TABLE 3.

Mean values for surface and line roughness characteristics and changes (mesolabial)

PARAMETER BASELINE DAY 90 DAY 150 PERCENT CHANGE AT DAY 90 PERCENT CHANGE AT DAY 150
Sa 65.0 39.1 36.5 40.0 44.0
Smax 1207.5 603.6 531.8 50.0 56.0
Sz 1123.9 546.9 486.8 51.0 57.0
Ra 40.1 26.0 24.5 35.0 39.0
Rmax 319.2 182.5 171.0 43.0 46.0
Rz 216.8 133.4 124.9 38.0 42.0

Ra: average roughness of skin; Rmax: maximum roughness of skin; Rz: average of single roughness depths; Sa: arithmetic mean of surface roughness of skin; Smax: height difference between highest peak and lowest valley on the entire measuring field; Sz: mean of 5 highest peaks and deepest valleys