Variation of Biophysical Parameters of the Skin with Age, Gender, and Body Region

Table 3

The mean and standard deviation of skin hydration, TEWL, melanin index, erythema index, sebum, and elasticity according to body location.

	Forehead	Cheek	Nasolabial fold	Neck	Forearm	Dorsal	Palm	Leg
Hydration	53.54 ± 16.49	62.12 ± 15.63	38.19 ± 18.02	62.88 ± 15.28	51.00 ± 15.92	44.14 ± 17.43	40.47 ± 18.47	37.22 ± 17.50
TEWL	12.27 ± 10.05	9.57 ± 7.22	14.05 ± 8.25	10.47 ± 9.23	10.12 ± 9.54	9.86 ± 8.84	23.47 ± 9.67	9.68 ± 9.52
Melanin	228.16 ± 66.48	203.35 ± 50.53	202.29 ± 54.01	225.96 ± 66.41	193.31 ± 70.34	225.94 ± 67.25	98.98 ± 41.75	189.71 ± 62.31
Erythema	420.49 ± 90.31	399.80 ± 91.12	480.42 ± 88.93	373.27 ± 97.31	257.88 ± 69.87	331.94 ± 62.23	248 ± 60.82	205.00 ± 63.52
Sebum	95.65 ± 51.38	73.39 ± 64.05	136.98 ± 72.33	64.41 ± 64.51	18.45 ± 37.88	8.84 ± 8.45	9.82 ± 10.11	2.88 ± 6.42
Elasticity	.2901 ±  .1072	.3040 ±  .0820	.3057 ±  .1051	.4528 ±  .1102	.2783 ±  .0775	.2280 ±  .0851	.1819 ±  .1339	.1373 ±  .0685