Vitamin C can be beneficial in night creams due to its antioxidant properties, which help repair skin damage accumulated during the day. While it's primarily known for daytime use, a lower concentration in a night cream can contribute to collagen production and skin brightening overnight.

Vitamin C's antioxidant effects are still useful at night to neutralize free radicals. It can also support collagen synthesis and skin repair while you sleep, though sun protection isn't a factor at night.

Retinol and vitamin C offer different benefits. Retinol excels at boosting cell turnover and reducing wrinkles, while vitamin C is a powerful antioxidant that brightens and protects. Many people alternate between the two or use them at different times of day.

The 'best' vitamin C cream depends on individual skin type and concerns. Look for formulations with stable forms of vitamin C like L-Ascorbic Acid or Tetrahexyldecyl Ascorbate, and consider the concentration, additional ingredients, and reviews to find the right match.