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

Table 2

The mean and standard deviation of skin hydration, TEWL, melanin index, erythema index, sebum, and elasticity in 5 age groups.

	10–20	20–30	30–40	40–50	50–60
Hydration	49.74 ± 19.25	47.08 ± 16.61	50.53 ± 17.69	53.34 ± 20.78	43.04 ± 20.58
TEWL	9.18 ± 6.46	14.90 ± 12.59	13.67 ± 8.99	14.64 ± 11.08	9.87 ± 8.50
Melanin	174.25 ± 58.55	235.95 ± 82.15	210.14 ± 76.04	181.10 ± 57.90	179.51 ± 63.68
Erythema	323.25 ± 125.42	370.36 ± 113.74	336.22 ± 122.64	337.62 ± 113.42	328.32 ± 117.91
Sebum	53.75 ± 77.94	50.10 ± 51.81	42.06 ± 60.42	66.71 ± 73.42	41.77 ± 57.72
Elasticity	.2561 ±  .1118	.3025 ±  .1566	.2887 ±  .1228	.2803 ±  .1211	.2345 ±  .1348