Sheer Cover Mineral Finishing Powder LIGHT Sealed 4G Use this powder over the foundation. It's translucent and adds the perfect amount of light to your skin. I add mine to my foundation to lighten it up a bit. It also absorbs oil and reduces pores. Skipping this step is one of the main reasons women think the medium shades are too dark for their skin. The finishing powder lightens and brightens up the foundation.