The Microbead-Free Waters Act of 2015 is a United States law that prohibits the addition of plastic microbeads in the manufacturing of certain personal care products, such as toothpaste. The purpose of the law is to reduce water pollution caused by these products. Manufacture of the microbead-containing products was prohibited in July 2017, and retail sales are prohibited as of July 2018.
This summary is from Wikipedia.
The summary below was written by the Congressional Research Service, which is a nonpartisan division of the Library of Congress, and was published on Dec 29, 2015.
(This measure has not been amended since it was reported to the House on December 7, 2015. The summary of the House passed version is repeated here.)
Microbead-Free Waters Act of 2015
(Sec. 2) This bill amends the Federal Food, Drug, and Cosmetic Act to ban rinse-off cosmetics that contain intentionally-added plastic microbeads beginning on January 1, 2018, and to ban manufacturing of these cosmetics beginning on July 1, 2017. These bans are delayed by one year for cosmetics that are over-the-counter drugs.