Vitamin C and retinol are two of the most popular skincare ingredients for improving the appearance of aging skin. Retinol is typically used at night and can help improve the appearance of wrinkles, collagen loss, and age spots. Vitamin C is usually applied in the morning to a bare face, followed by sunscreen. As an antioxidant, vitamin C can help protect the skin from oxidative stress, while vitamin C serums containing ascorbic acid may improve the appearance of collagen, wrinkles, hyperpigmentation, and age spots. Together, vitamin C and retinol can be a great combination for an evidence-based anti-aging skincare routine. VitaminC Retinol Skincare AntiAging Dermatologist SkincareRoutine Hyperpigmentation Wrinkles Sunscreen LTKBeauty