Yves Saint Laurent provides a new perspective on Nude. Rouge Pur Couture Slim Glow Matte Lipstick from YSL gives your lips a matte finish thanks to the formula containing light-reflecting pearls and mallow flower extract from YSL’s Ourika gardens. A slim lipstick with straight edges and a radiant, matte finish in nude couture colors.Slim Glow Matte Lipstick from YSL gives you high precision and long-lasting comfort. The elegant and modern tube in black and rose gold is the perfect couture accessory. Yves Saint Laurent The Slim Glow Matte