Black Opal Invisible Oil Blocking Powder. A no color, truly invisible oil blocking powder that absorbs oil and blocks shine for hours. Light-weight formula, with unique oil blotters to control shine breakthrough, leaving skin looking completely matte without a powdery residue. Invisible powder is color free to blend perfectly with every skin tone. Wont dry out skin or alter the shade of your foundation. Can be worn alone or over foundation. Hypoallergenic. Non-comedogenic- will not block pores or cause breakouts.