Yves Saint Laurent Beaute Water Stain Glow Lip Stain What It Is: A lightweight lip stain that leaves lips luminous and glowing. What It Does: Enriched with aloe Vera for hydration, this lip stain is available in a range of shades to flatter every skin tone. Its formula is also infused with mallow flower extract to help smooth your lips. How to Use: Use the pointed tip of the applicator to precisely outline your lips. Use the curve of the applicator and evenly fill in the center of your lips, .