Why is it so hard to find a treatment for hair loss? Every year people spend billions trying to prevent hair loss. So why haven't we found a cure for going bald? Science writer Stephen Buranyi explains hair loss. Subscribe to BBC Ideas 👉 https://bbc.in/2F6ipav ---------------------------------------------------------------------------------- Do you have a curious mind? You’re in the right place. Our aim on BBC Ideas is to feed your curiosity, to open your mind to new perspectives, and to leave you that little bit smarter. So dive in. Let us know what you think. And make sure to subscribe! 👉https://bbc.in/2F6ipav Visit our website to see all of our videos: https://www.bbc.com/ideas And follow BBC Ideas on Twitter: https://twitter.com/bbcideas #bbcideas #hairloss #science