%

Aging skin (UV)

Aging skin + HA

Statistical analysis

Proliferation rate

3.9 ± 2.6

8.5 ± 2.8

*p = 0.028

Elastin

2.2 ± 1.4

4.9 ± 2.4

*p = 0.040

Collagen

60.0 ± 14.4

75.9 ± 7.4

*p = 0.027