The importance of having a day cream and a night cream is linked to their two complementary actions. Day cream is a shield for the day. It will protect you from all external stress factors throughout the day, such as pollution, friction, blue light, etc. On the other hand, night cream is designed to regenerate the skin while you sleep. Its action is more intense than that of a day cream, as it has a higher concentration of detoxifying, nourishing, and anti-aging active ingredients, which can take full effect when the skin is at rest.