Foundation as a cosmetic product that is used for coloring and contouring the skin and changing the skin tone . foundations are in different types such as Liquid or Cream Foundation , Tinted Moisturizer , Oil-based Foundation Makeup , Sheer Foundation , Matte, or "Oil-free," Foundation , Mousse or Whipped Foundation , Stick Foundation , Powder or Compact Foundation , Mineral Foundation , Shimmer Foundation , Waterproof Foundation and Foundation Primer .