20 Sep 2022 --- PerformanceLabs has prompted solutions to combine the use of vitamin C and retinol, by using them alternatively or by day and night, to mitigate the risk of skin barrier damage when used together at once. Vitamin C and retinol have been considered “powerhouses” in the skincare world separately, but PreformanceLabs reports they can function even better together when applied strategically.Vitamin C is a skin brightener for achieving radiant skin and contains some anti-aging properties. Retinol is a potent ingredient that promotes cell turnover in the skin, eliminating blemishes and wrinkles at a quicker pace.