IL6 and Erythema: A multivariate regression analysis confirmed the use of topical hyaluronic acid as an independent favorable factor for shortening erythema regression time [odds ratio (OR) = 7.394, 95% confidence interval (CI): 2.353-23.240, <i>p</i> < 0.001] and reducing day-14 IL-6 levels (OR = 8.109, 95% CI: 3.327-19.768, <i>p</i> < 0.001).