Belly button lint is made of clothing fibers, hair, and dead skin cells

Likes

More Like Discover

Hello UK tour!

Find out about this extraordinary mathematician…

From lava lands to swimming with dolphins – enjoy an amazing family holiday to the Azores!

Learn all about this colourful country!

You’re leaving natgeokids.com
to visit another website!

Ask a parent or guardian to check it out first and remember to stay safe online.

You're leaving our kids' pages to visit a page for grown-ups!

Be sure to check if your parent or guardian is okay with this first.