parts per million

You can’t smell it. You can’t see it. But in many homes—especially air conditioned, tightly sealed ones—formaldehyde quietly lingers in the air. It hides in building materials, pressed wood, fabrics, and everyday household products, slowly affecting the quality of the indoor environment. And while it’s not talked about often, long-term exposure to formaldehyde can impact your health in ways that build up over time.