Perimeter Solutions, the company that makes the substance, explains its hot pink hue. As crews battle fires in Los Angeles, the hot pink fire retardant they’ve dropped to stall the flames’ advance has become one of the striking visuals to come out of the disaster.

Aircraft battling fires raging through the Los Angeles area are dropping hundreds of thousands of gallons of hot-pink fire suppressant in a desperate effort to stop the flames.

Fire agencies say the suppressants — most often used to fight forest fires — are an invaluable tool. But what is in them and are they safe?

Streets in Southern California were painted red this week as planes continue to fly overhead dropping red clouds over burned areas. But why is it red?

It’s widely used because it can slow flames in ways that water can’t. But it also contains heavy metals and other harmful compounds.

Fire officials are using aircrafts to drop pink flame retardants over portions of L.A. to stave off the spreading wildfires in the region.