Figure 4.

Increase in ubiquinone and ubiquinol content within the epidermis after treatment with Q10‐containing formulas. Following a 14‐day treatment with formula 1 and formula 2 ubiquinone (A) and ubiquinol (B) levels were determined within the epidermis obtained from treated forearm skin compared with untreated control skin. Results are depicted as mean ± SEM (20–66 years; n = 73). Significant differences are marked with an asterisk [*P < 0.05 with respect to the untreated control (repeated measures analysis of variance, Dunnett's post hoc test)].