## 3 Results
### Study of Impact of Series of WBC on Selected Skin Characteristics  
To illustrate the effect of a series of treatments of WBC on selected skin characteristics, the results performed before the 1 st (I), before the 10 th (III), and before the 20 th treatment (V) were compared among themselves. The results of skin hydration measurements on the face and forearms are shown in Figure 3. Analysis of the results of the corneometric measurements on the face indicated significant differences in measurements only for the interaction measurement x group (\(p\) = 0.028; \(\omega^{2}\) = 0.055). \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c} \hline \hline  & & \multicolumn{6}{c}{**SG**} & \multicolumn{6}{c}{**CG**} \\ \cline{3-14}  & & \multicolumn{2}{c}{\(\Delta\)**1**} & \multicolumn{2}{c}{\(\Delta\)**10**} & \multicolumn{2}{c}{\(\Delta\)**20**} & \multicolumn{2}{c}{\(\Delta\)**1**} & \multicolumn{2}{c}{\(\Delta\)**10**} & \multicolumn{2}{c}{\(\Delta\)**20**} & \\ \cline{3-14}  & & \(\overline{\mathbf{x}}\) & **SD** & \(\overline{\mathbf{x}}\) & **SD** & \(\overline{\mathbf{x}}\) & **SD** & \(p\) & \(\overline{\mathbf{x}}\) & **SD** & \(\overline{\mathbf{x}}\) & **SD** & \(\overline{\mathbf{x}}\) & **SD** & \(p\) \\ \hline \multirow{3}{*}{Hydration [IU]} & Face & 7.13 & 7.03 & 9.69 & 10.88 & 7.77 & 7.19 & 0.623 & 7.99 & 8.09 & 6.23 & 6.19 & 6.54 & 7.79 & 0.873 \\ \cline{2-14}  & Forearm & 7.58 & 7.76 & 6.11 & 5.46 & 12.49 & 8.76 & 0.078 & 4.26 & 3.13 & 8.93 & 8.74 & 6.47 & 8.22 & 0.275 \\ \hline \multirow{3}{*}{TEWL [g/m\({}^{2}\)/h]} & Face & 5.08 & 3.6 & 2.59 & 1.96 & 10.25 & 15.06 & 0.172 & 3.20 & 2.70 & 9.24 & 7.94 & 6.78 & 7.70 & 0.105 \\ \cline{2-14}  & Forearm & 16.96 & 20.33 & 3.41 & 5.48 & 17.99 & 12.87 & 0.046 \({}^{*}\) & 4.77 & 4.15 & 17.73 & 14.97 & 11.91 & 15.91 & 0.144 \\ \hline \multirow{3}{*}{pH} & Face & 0.74 & 0.74 & 0.52 & 0.46 & 0.71 & 0.4 & 0.614 & 0.7 & 0.48 & 0.47 & 0.29 & 0.54 & 0.57 & 0.484 \\ \cline{2-14}  & Forearm & 0.74 & 0.81 & 0.63 & 0.70 & 0.8 & 0.75 & 0.857 & 0.69 & 0.6 & 0.34 & 0.29 & 0.45 & 0.43 & 0.212 \\ \hline \multirow{3}{*}{R\({}^{0}\)} & Face & 0.30 & 0.88 & 0.04 & 0.05 & 0.05 & 0.09 & 0.913 & 0.02 & 0.01 & 0.02 & 0.02 & 0.02 & 0.01 & 0.337 \\ \cline{2-14}  & Forearm & 0.03 & 0.03 & 0.30 & 0.86 & 0.02 & 0.094 & 0.02 & 0.02 & 0.04 & 0.03 & 0.02 & 0.01 & 0.009 \({}^{*}\) \\ \hline \multirow{3}{*}{R\({}^{2}\)} & Face & 15.16 & 15.92 & 7.81 & 4.38 & 18.76 & 0.779 & 3.81 & 2.69 & 4.54 & 3.08 & 3.58 & 3.72 & 0.463 \\ \cline{2-14}  & Forearm & 7.54 & 5.58 & 8.20 & 5.04 & 11.13 & 8.54 & 0.401 & 4.32 & 3.45 & 11.02 & 9.71 & 5.58 & 5.42 & 0.529 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Studying the effect of adaptation on the effect of a single cold exposure. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & & \multicolumn{6}{c}{**SG**} & \multicolumn{6}{c}{**CG**} \\ \cline{3-10}  & & **I vs. II** & **III vs. IV** & **V vs. VI** & **I vs. II** & **III vs. IV** & **V vs. VI** \\ \hline \multirow{3}{*}{R\({}^{0}\)} & Face & 0.381 & 0.072 & 0.468 & 0.424 & 0.422 & 0.260 \\ \cline{2-10}  & Forearm & 0.452 & 0.422 & 0.921 & 0.701 & 0.091 & 0.109 \\ \hline \multirow{3}{*}{R\({}^{2}\)} & Face & 0.243 & 0.802 & 0.352 & 0.095 & 0.562 & 0.493 \\ \cline{2-10}  & Forearm & 0.381 & 0.588 & 0.054 & 0.399 & 0.062 & 0.025 \({}^{*}\) \\ \hline \multirow{3}{*}{R\({}^{0}\)} & \multirow{3}{*}{SG\({}^{-}\)study group, GC\({}^{-}\)control group, SD\({}^{-}\)standard deviation, BMI—body mass index, TEWL—transepidermal water loss, R\({}^{0}\)—skin firmness, R\({}^{2}\)—skin elasticity, \({}^{*}\)\(p\)\(<\) 0.05. ——measurement before 1 st cryotherapy; IL—measurement after 1 st cryotherapy; IL—measurement before 10 th cryotherapy; IV—measurement after 10 th cryotherapy; V—measurement before 20 th cryotherapy; VI—measurement after 10 th cryotherapyFor the forearm, significant differences in the results were indicated (\(p\) = 0.002; \(\omega^{2}\) = 0.116). An interaction of score x group was noted (\(p\) < 0.001; \(\omega^{2}\) = 0.139).