Figure 4. The effect of LMWCP on dermal density and skin thickness using a Dermascan C (a) Dermal density in the test and placebo groups compared to 0W were calculated using the Wilcoxon signed-rank test with **P<0.01, ***P<0.001. (b) § and §§§ indicate significant differences between the test group and the placebo group (§P<0.05, §§§P<0.001, respectively; Mann-Whitney U test using delta values). (c) Statistical analysis of skin thickness in the test group compared to the placebo group were calculated using the repeated measures ANOVA with contrast test with †P<0.05, ††P<0.01, †††P<0.001; †comparison with 0W, † (bold italic) comparison with the placebo group. All values are presented as mean ±SD : Oral Supplementation with Low-molecular-weight Collagen Peptide Improves Hydration, Facial Lifting, Dermal Density, Skin Desquamation and Nails: A Randomized, Double-blind, Placebo-controlled, and Maintenance of Effect Study : Science and Education Publishing

Figure 4. The effect of LMWCP on dermal density and skin thickness using a Dermascan C (a) Dermal density in the test and placebo groups compared to 0W were calculated using the Wilcoxon signed-rank test with P<0.01, *P<0.001. (b) § and §§§ indicate significant differences between the test group and the placebo group (§P<0.05,§§§P<0.001, respectively; Mann-Whitney U test using delta values). (c) Statistical analysis of skin thickness in the test group compared to the placebo group were calculated using the repeated measures ANOVA with contrast test with †P<0.05, ††P<0.01, †††P<0.001; †comparison with 0W, † (bold italic) comparison with the placebo group. All values are presented as mean ±SD

Journal of Food and Nutrition Research. 2022, 10(8), 546-559 doi:10.12691/jfnr-10-8-3