Product Details New and improved YSL Beauty All Hours Foundation for a complexion that you can rely on all day. Now with an upgraded, breathable formula that provides up to 24H full coverage and a weightless light as air feel, as if your skin was bare.; The new formula is infused with hyaluronic acid for all day hydration, as well as day after day skin-caring benefits. Skin is proven to feel softer, smoother, and more hydrated*. All Hours foundation now achieves a transfer proof, waterproof and sweat proof finish. The complexion appears flawless and fresh, for a 24H** natural luminous matte makeup result.; Discover YSL All Hours Foundations new 3 letter shade naming system for better shade finding: 1st digit represents your skintone, Light (L)/Medium (M)/Deep (D) 2nd digit represents your skin undertone.; Cool (C): Your skin has hints of pink, blue or purple tones.; Neutral (N): Your skin has a mixture of both warm and cool tones, or you find it difficult to determine.; Warm (W): Your