rare Lancome Prep & Matte Refreshing Mattifying Make-Up Primer Full Size [New In Box]. BLURRING & MATTIFYING What it is: A shine-free, ultra-lightweight makeup primer that blurs imperfections, leaving behind a natural matte complexion What it does: This ultra-lightweight, oil-free makeup primer renders a sleek, mattified complexion while visibly reducing the appearance of pores and fine lines. Plus, it’s formulated to let light reflect off the skin’s surface--thus, ensuring no flashback effect.