The Healthy Materials Lab formed to build healthier lives for all people through the dramatic reduction of toxins in the building industry. This initiative aims to transform the way that building products are manufactured, eliminate avoidable toxics and support the creation of new materials. Through optimizing the health and transparency of building materials in the entire supply chain, the lives of all people will become healthier.

These postcards aim to introduce the Healthy Materials Lab by calling attention to five building products that are very common in our built environments and are found in everybody's daily lives.

What do we actually know about these materials?