Still a Scourge (image) University of Kansas Share Print E-Mail Caption A 2015 federal law to ban microplastics in some exfoliants didn't remove them from other personal-care products or clothing. Microplastics are bits of plastic smaller than 5 mm. Credit University of Kansas Usage Restrictions None Share Print E-Mail 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.