SeneSerum-C features one of the most well-known anti-aging ingredients, vitamin C. This hydrating formula is great for all skin types and works to protect the skin, resulting in a brighter, firmer-looking, more youthful appearance. It is light and can be used during the day or at night under moisturizers. Hydrating C-Pearls™: Encapsulation and delivery technology that freshly delivers stabilized vitamin C at application to help extend its potency. SeneShield: Helps protect skin from the environment. Tip: Apply Advanced Anti-Aging SkinCare before DayTime or Evening Moisturizer.