Your favorite clothes, cookware, and even dental floss may contain toxic chemicals that are harmful to human health. Now, a new Colorado law is aiming to make those products safer.

The new law will affect all kinds of things Coloradans buy and use every day, that are made using something called per- and poly-fluoroalkyl substances, or PFAS.

They are commonly called “forever chemicals,” because of how durable they are, which makes them great ingredients in things like waterproof clothing and nonstick cookware.

The problem is, the more humans are exposed to PFAS, the more they can build up in the body, and can increase the risk of serious health problems, including cancer, heart disease, and infertility.

This week, advocates celebrated the passage of the new law in Broomfield.