What actually slows down ageing? The secrets and crazy claims of the beauty business. Revealing the dream regime that works, even for a bunch of builders.

And the pivotal moments when the beauty industry turned itself into a pseudo-science, and an eye-watering $130bn business.

Writer & Presenter: Tim SamuelsExecutive Producer: Barney RowntreeProducers: Chessie Bent and Nick MinterAssistant Producer: Sera BakerMixing & Sound Design: Ali RezakhaniOriginal Music: Xavior RoideSeries Editor: Gloria Abramoff

All Hail Kale is made by Tonic Productions for BBC Sounds.