Yves Saint Laurent Beaute 1.4 oz. Top Secrets Ultra Moisture Glow What It Is An ultra-rich moisturizing prep cream that creates an instant glowing finish. What It Does: Nourishes the skin for softened, and comforted textured. Creates an instant radiant glow with or without makeup. Formulated with hyaluronic acid and a backlight complex to maximize a natural and radiant glow. How To: Apply with long gliding motions from the center of the face outwards. To use as a luminous primer, Mix one drop.