During the daytime, our skin uses its energy to protect itself. All Day All Year is the perfect day care product, supporting the skin by acting as a global protective shield. It protects the skin while activating its self-defense(1) mechanisms to keep the skin looking younger for longer. When designing All Day All Year, Sisley’s Laboratories studied the internal and environmental factors to which we are exposed over our lives. These factors are grouped together under the scientific term exposome, which encompasses solar radiation, pollution and cigarette smoke in particular. They are responsible for 80% of skin aging. The complex and highly concentrated formula of All Day All Year protects the skin from aggressors that cause premature aging and enhance its self-defense(1) power thanks to two complementary physical and biological shields. The physical shield provides comprehensive protection on the surface of the skin: - against UVA and UVB rays all day long(1) , by means of its encapsu