Vitamin C is perfect in the day as its potent antioxidant properties help support skin’s defence against environmental aggressors. However, it also offers support to skin’s nighttime repair processes. Vitamin C boosts collagen production and accelerates the skin’s natural repair process. Applying it at night can maximize these benefits, as your skin is already in repair mode.\r At night, your skin’s permeability increases, allowing for better absorption of topical treatments. This means that Vitamin C can penetrate deeper into the skin, enhancing its effectiveness. And Vitamin C is known for its ability to lighten dark spots and even out skin tone. Using it at night allows it to work uninterrupted, promoting a brighter complexion over time.