Table 5.

Rheological results obtained by the characterization of the five HA hydrogel dermal fillers at 37 °C and at a frequency value of 1 Hz. Data are represented as averages and relative standard deviations percentage (RSD %).

Product	G’ (Pa)	G’’ (Pa)	tan δ
22 mg/mL	45.03 ± 5.77	19.90 ± 7.22	0.44 ± 4.46
24 mg/mL	82.13 ± 8.58	33.31 ± 5.79	0.41 ± 5.99
26 mg/mL	89.13 ± 6.78	34.49 ± 8.41	0.41 ± 2.92
28 mg/mL	145.20 ± 7.32	63.42 ± 7.14	0.44 ± 5.60
Not cross-linked	1.57 ± 6.08	6.73 ± 1.98	5.02 ± 7.33