Silk (IMAGE) University of Cincinnati Caption Postdoctoral researcher Adam Parlin holds up a styrofoam head draped with a silk mask. UC biologists examined how well face masks made from different materials repelled water or aerosolized droplets. Silk impeded the penetration and absorption of liquid and aerosolized droplets better than cotton or synthetic fabrics. Credit Joseph Fuqua II/UC Creative + Brand Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.