During the daytime, our skin uses its energy to protect itself. All Day All Year is the perfect daycare product, supporting the skin by acting as a global protective shield. It protects the skin while activating its self-defense mechanisms to keep the skin looking younger for longer.When designing All Day All Year, Sisleya'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 ageing.The complex and highly concentrated formula of All Day All Year protects the skin from aggressors that cause premature ageing and enhance its self-defense power thanks to two complementary physical and biological shields. The physical shield provides comprehensive protection on the surface of your skin:- against UVA and UVB rays all day long, by means of its encapsulated filters that do not penetrate the skin. against pollutants to limit their penetration into the skin.Within the skin, the biological shield stimulates its natural defences by strengthening your skin barrier.- activating the skin's self-defense capabilities to limit the harmful effects of pollutants and UV rays.- providing an anti-ageing action.A global shield that immediately protects the skin at the surface, reinforces its resistance and stimulates its natural power .Its comfortable and melt-in texture leaves a silky, non-shiny finish on the skin and allows make up to be applied soon after application.Its glass bottle has been designed to be recyclable, in particular through a removable pump and the use of glass compatible with recycling technologies. in vitro test more than 99% of the filters remain on the skin's surface ex vivo test