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. 2024 Jan 30;25(3):1677. doi: 10.3390/ijms25031677

Table 1.

Skin biomechanical properties (R0 and R2 average value ± SD) before and after treatment with 2.5%w/w AAO or Placebo.

Visit Day Inline graphic
Inline graphicSkin Parameter
Baseline (D0)
Mean ± SD
Day 14 (D14)
Mean ± SD
∆% vs. D0 Day 28 (D28)
Mean ± SD
∆% vs. D0
2.5%w/w AAO Skin pliability/firmness (R0) 0.355 ± 0.024 mm 0.322 ± 0.014 mm −9.0% *** $$$ 0.308 ± 0.028 mm −13.0% *** $$$
Gross elasticity (R2) 0.602 ± 0.066% 0.676 ± 0.052% 14.0% *** $ 0.759 ± 0.071% 28.0% *** $$$
Placebo Skin pliability/firmness (R0) 0.308 ± 0.047 mm 0.342 ± 0.037 mm 8.0% 0.342 ± 0.037 mm 12.0%
Gross elasticity (R2) 0.507 ± 0.044% 0.521 ± 0.041% 3.0% 0.526 ± 0.038% 4.0%

t-test vs. D0 *** p < 0.001; ANOVA vs. Placebo $ p < 0.05, $$$ p < 0.001.