Want a matte foundation to help you achieve a flawless-looking complexion? Nyx Professional Makeup’s Stay Matte But Not Flat Powder Foundation provides the perfect finish to flatter more skin tones than ever before. You’ll look naturally flawless with minimal effort! Stay Matte But Not Flat Powder Foundation is the best foundation powder to cover imperfections and even skin tone. With its natural matte finish, the powder makeup won’t leave your skin looking flat or dry.