Assembly Line

What is toothpaste made of?

Toothpaste takes 7 things directly, among them limestone, silica sand, water, glycerin, titanium dioxide and polyethylene. Trace them back and you pass 20 made things on the way to 15 raw materials.

How toothpaste is made See it on the map

What goes straight in

From the ground: 15 raw materials

Made along the way: 16 things

Metals 3

Chemicals and fuels 11

Food 2

What it is packed in

On the line, but left out of everything above, because it holds the finished thing rather than goes into it.