According to the International Dermal Institute, 50 percent of the adult population struggle with oily skin too. And with that annoying sheet of shine that settles on the surface of skin, often comes acne. But there are products that can offer some much-needed relief, like ones formulated with clay. Yep, the magical little puddy is a star in helping to keep skin looking mattified, which is why L’Oréal Paris incorporated it into its Pure-Clay Mask line. Check out how and why this stuff works.