YSL All Hours Foundation is a full-coverage, long-wear liquid foundation designed to deliver a flawless, matte finish that lasts up to 24 hours. Lightweight yet highly pigmented, it smooths the appearance of pores, fine lines, and imperfections while feeling comfortable and breathable on the skin. Infused with skincare-inspired ingredients, it helps control shine, resist sweat and humidity, and maintain a fresh, polished look from day to night. Suitable for all skin types, this foundation provides buildable coverage with a natural, refined finish that stays true all day.