## 3 Results
### Long-Term Stability Analysis of the Selected Formulation for Volunteer Testing  
The obtained test results allowed for a preliminary comparative analysis of the prepared cosmetic creams containing common bean sprout extract (_P. vulgaris_) with a reference cream. Due to the comparable physicochemical parameters for the C1-C5 creams (Table 2), each of them could potentially be selected as the final product for testing on volunteers. Given the similar rheological properties to the reference cream (CR) and the comparable occlusive effect, cream C1 was chosen for further testing, including long-term stability and accelerated aging tests. After long-term stability analysis and accelerated aging tests, the cream was chosen for in vivo efficacy tests with the volunteers. The results obtained for long-term stability tests for C1 cream and reference cream are summarized in Tables 3 and 4. Long-term stability testing of cream C1 and the reference cream (CR) showed that both products remained stable throughout the test period, with no changes in color or \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c} \hline \hline  & **Days** & **1 d.** & \multicolumn{3}{c}{**7 d.**} & \multicolumn{3}{c}{**30 d.**} & \multicolumn{3}{c}{**90 d.**} & \multicolumn{3}{c}{**180 d.**} \\ \hline  & temp. & — & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C \\ \hline \multirow{4}{*}{C1} & average & 3.63 & 3.66 & 3.68 & 3.63 & 3.65 & 3.67 & 3.71 & 3.67 & 3.77 & 3.73 & 3.67 & 3.75 & 3.76 \\  & min. & 1.72 & 1.54 & 1.02 & 1.65 & 1.58 & 1.84 & 2.05 & 2.04 & 1.8 & 1.27 & 1.6 & 1.94 & 2.29 \\  & max & 11.98 & 11.98 & 11.94 & 11.15 & 12.10 & 11.97 & 11.88 & 12.64 & 12.06 & 12.90 & 13.51 & 13.67 & 13.73 \\  & sd & 1.56 & 1.55 & 1.67 & 1.43 & 1.80 & 1.53 & 1.22 & 1.74 & 1.31 & 1.5 & 1.75 & 1.48 & 1.89 \\ \hline \multirow{4}{*}{CR} & average & 4.10 & 4.13 & 4.14 & 4.05 & 4.07 & 4.15 & 4.07 & 4.15 & 4.17 & 4.43 & 4.47 & 4.45 & 4.76 \\  & min. & 2.12 & 2.06 & 2.43 & 2.08 & 2.36 & 2.2 & 2.09 & 2.24 & 2.58 & 2.57 & 2.6 & 2.99 & 3.29 \\ \cline{1-1}  & max & 8.98 & 9.19 & 6.94 & 9.15 & 6.10 & 9.97 & 13.88 & 10.94 & 9.67 & 9.79 & 10.51 & 10.67 & 17.73 \\ \cline{1-1}  & sd & 1.16 & 1.58 & 0.97 & 1.53 & 0.86 & 1.32 & 1.79 & 1.34 & 1.28 & 1.15 & 1.85 & 1.18 & 1.68 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Average droplet size of the oil phase for C 1 and CR after 1, 7, 30, 90, and 180 days of storage at 4 \({}^{\circ}\)C, 20 \({}^{\circ}\)C, and 40 \({}^{\circ}\)C.  
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c} \hline \hline  & **Days** & **1 d.** & \multicolumn{3}{c}{**7 d.**} & \multicolumn{3}{c}{**30 d.**} & \multicolumn{3}{c}{**90 d.**} & \multicolumn{3}{c}{**180 d.**} \\ \hline  & temp. & — & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 4\({}^{\circ}\)C & 20\({}^{\circ}\)C & 40\({}^{\circ}\)C & 40\({}^{\circ}\)C \\ \hline \multirow{4}{*}{C1} & \(\eta_{\text{S}}\)s\({}^{-1}\) & 18.09 & 19.21 & 19.22 & 20.86 & 17.76 & 19.84 & 20.78 & 23.08 & 22.14 & 17.49 & 23.084 & 19.81 & 17.129 \\  & \(\eta_{\text{S}}\)s\({}^{-1}\) & 2.4 & 2.62 & 2.65 & 2.73 & 2.64 & 3.07 & 3.17 & 2.86 & 3.02 & 2.68 & 2.86 & 2.86 & 2.67 \\  & d & 0.966 & 0.929 & 0.990 & 0.997 & 0.996 & 0.999 & 0.995 & 1.002 & 0.998 & 1.012 & 1.000 & 1.001 & 1.001 \\  & sd & \(\pm\) 0.002 & \(\pm\) 0.001 & \(\pm\) 0.002 & \(\pm\) 0.001 & \(\pm\) 0.001 & \(\pm\) 0.003 & \(\pm\) 0.002 & \(\pm\) 0.001 & \(\pm\) 0.004 & \(\pm\) 0.003 & \(\pm\) 0.001 & \(\pm\) 0.001 & \(\pm\) 0.001 \\  & 29.58 & \(\pm\) 2.81 & \(\pm\) 2.85 &odor. Centrifugal tests showed no signs of phase separation. There were no statistically significant changes in oil-phase droplet size, viscosity, pH, or spreadability index in the comparative analysis of both creams.