Demi Moore’s shiny, waist-length locks are not just beautiful – they reveal a fundamental truth about hair health: it starts from within.

“When I’m not working, I try to do as little to it as possible. It’s stressful even having someone touch it. If I don’t have anywhere to go, I don’t put heat on it – I just try to let it do its own thing. And I don’t wash it too often,” Moore told People magazine in a 2022 interview.

“I get regular tiny trims. The rest comes from the inside out. You have to eat well, all those things.”

Beatriz Robles, a food technologist and expert in nutrition and dietetics, told lifestyle magazine Vogue: “Changes in the appearance, volume, or density of hair can be a sign that there is a nutritional deficit in our diet.”