All Hours base with hyaluronic acid, with 24-hour full coverage without burdening the skin. Perfect skin that you can rely on all day, all night, all the time. The enhanced breathable formula provides full coverage for 24 hours. Feel an extraordinarily sensual experience on your skin thanks to the full coverage that creates a second skin effect. The formula contains hyaluronic acid, which provides a feeling of hydration throughout the day and provides care every day, even after removing makeup. The skin becomes softer, smoother and more hydrated after 2 weeks of use. To update All Hours, YSL has developed Skin-Fusin technology, which mimics the structure of the skin in order to completely merge the base with the skin. Triple resistance: abrasion resistance, water resistance and sweat resistance.