What it is: A silky gel emulsion that hydrates and creates a smooth canvas for foundation or powder application.What it does: It's the brand's classic primer to achieve radiant, glowy skin that features illuminating pearlescent powders to reflect optic radiance. M∙A∙C Prep + Prime Natural Radiance is available in two shades: Radiant Yellow and Radiant Pink to accommodate a range of skin tones. The formula disappears upon application, resulting in a beautiful glow. It provides all-day, long-term hydration that smoothes and softens skin. It improves radiance and contains known antioxidants that refine skin. How to use: Smooth evenly all over the face or to the desired areas after moisturizer (right before foundation) with fingertips, sponge or brush.