504 JOURNAL OF COSMETIC SCIENCE Table I Correlation Coefficients Between Age (above 60 years) and Blood Flow Parameters in the Cheek and Forehead Correlation coefficient Linear Exponential Parameters No. in group Cheek Forehead F .... 40 Fmt•r_ L 40 Fmi n 40 Fx•x 40 Fpost_L 40 -0.077 -0.200 -0.094 -0.228 -0.197 -0.296 -0.184 -0.114 -O.246 -0.230 -0.118 -0.272 -0.100 -0.306' -0.158 -0.256 -0.130 -0.300 *p 0.05. Table II Correlation Coefficients Between Age (above 60 years) and Surface Parameters at Several Sites of Facial Skin Parameters Correlation coefficient Linear Exponential No. in Corner Lower Nasolabial Corner of group of eye eyelid groove mouth Cheek Forehead 0.221 0.031 0.268 0.148 0.404** 0.181 sWa 40 0.151 0.000 0.301 0.094 0.313' 0.192 0.439*** 0.083 0.407** 0.228 0.433*** 0.126 sWp 40 0.342* 0.063 0.402** 0.148 0.376* 0.122 0.225 0.044 0.242 0.077 0.424** 0.154 sWt 40 0.137 0.000 0.272 0.054 0.340* 0.151 0.236 0.000 0.260 0.148 0.114 0.176 sWq 40 0.154 0.000 0.300 0.094 0.134 0.181 *p 0.05 **p 0.001 ***p 0.005. 0.01) on the cheek, in sWp (p 0.005) at the outer corner of the eye, and in sWp (p 0.01) on the nasolabial groove. RELATIONSHIP BETWEEN BLOOD FLOW AND SURFACE MORPHOLOGY OF THE FOREHEAD Table III shows the correlations between the blood flow parameters and surface morphol- ogy parameters of the forehead. No correlation was observed in any combination of the parameters, either by logarithmic regression or by linear regression.

BLOOD FLOW IN FACIAL SKIN 505 Table III Correlation Coefficients Between Blood Flow Parameters and Surface Parameters on the Forehead Linear Correlation coefficient Exponential Blood flow parameters Parameters No. in group F .... Fi ..... I• F,,in F,,•x Fp .... :L 0.105 0.004 -0.032 0.063 0.089 sWa 40 0.118 0.063 0.000 0.094 0.118 0.089 0.055 0.055 0.095 0.089 sWP 40 0.104 0.077 0.100 0.134 0.130 0.145 0.126 0.063 0.110 0.126 sWt 40 0.148 0.134 0.104 0.130 0.148 0.105 0.045 -0.032 0.063 0.089 sWq 40 0.118 0.063 0.000 0.094 0.118 RELATIONSHIP BETWEEN BLOOD FLOW AND SURFACE MORPHOLOGY IN THE CHEEK Table IV shows the correlations between the blood flow parameters and surface mor- phology parameters of the cheek. Significant negative correlations were observed be- tween the surface morphology parameters sWp and sWt and all blood flow parameters, between sWa and all blood flow parameters except parameter Fmi n and Fpost_L , and between sWq and parameter Fmi n. Figure 4 shows the relationship between the surface morphology parameter sWp and the blood flow parameter Finter_L, which showed the highest correlation, in the cheek. Figure 5 shows the relationship between the surface morphology parameters sWa and the blood flow parameter Frest. Figure 6 shows close-up photographs of representative replicas. Table IV Correlation Coefficients Between Parameters of Blood Flow and Surface Parameters in the Cheek Parameters No. in group F .... Linear Correlation coefficient Exponential Blood flow parameters Fmter-L Fmin Fmax Fpost-L -0.298 sWa 40 -0.362* -0.401'* sWp 40 -0.476*** -0.373* sWt 40 -0.459*** -0.055 sWq 40 -0.187 -0.255 -0.195 -0.221 -0.217 -0.311' -0.235 -0.257 -0.253 -0.404** -0.378* -0.356* -0.349* -0.510'*** -0.509**** -0.429*** -0.432*** -0.367* -0.336* -0.327* -0.324* -0.479*** -0.458*** -0.406** -0.410'* 0.134 0.310' 0.000 0.032 0.148 -0.130 -0.089 *p 0.05' **p 0.01 ***p 0.005 ****p 0.001.