Effect of topical vitamin C on postoperative carbon dioxide laser resurfacing erythema.

BACKGROUND Postoperative erythema of several months duration is a universal and problematic side effect of cutaneous carbon dioxide (CO2) laser resurfacing. OBJECTIVE This study was conducted in order to determine the effectiveness of two formulations of topical ascorbic acid in reducing the degree and duration of post-CO2 laser resurfacing erythema. RESULTS The application of topical L-ascorbic acid in an aqueous formulation resulted in a significant decrease in post-CO2 laser resurfacing erythema by the eighth postoperative week when compared with laser-irradiated skin that had not received topical vitamin C. The application of topical ascorbic acid in a cream formulation did not result in a significant reduction in post-CO2 laser resurfacing erythema. CONCLUSION Topical L-ascorbic acid, when used in an appropriate vehicle and when initiated at an appropriate postoperative period, may decrease the degree and duration of erythema after cutaneous CO2 laser resurfacing. It is presumed that the anti-inflammatory effect of vitamin C is responsible for the clinical changes observed in this study.