(WHTM) — Environmental advocates are raising red flags over toxic chemicals in cosmetics.

They’re called PFAS and are known as forever chemicals. That’s because they never leave the body, and build up over time, sometimes causing serious illness and side effects.

A recent study shows nearly all cosmetics contain those dangerous chemicals. Waterproof products have the highest concentration of PFAS. There’s now a bi-partisan proposal in Washington aimed at eliminating PFAS from cosmetics.

“As a consumer and advocate, we have a right to know if these toxic chemicals that are linked to cancers like thyroid, reproductive, immune suppression are in products I use,” Anne Hulick of Clean Water Action said.

Right now there is no law requiring PFAS to be labeled in products. Pennsylvania’s new state budget includes $1.6 million to study possible links between PFAS and cancer.