Catherine Zeta-Jones reportedly uses liquidized caviar as part of her hair care routine in order to keep her legendarily lovely locks looking their best.

A source told the Daily Mail that Catherine regularly undergoes the two-hour treatment at a cost of around £200 a time. Her hair is first washed with truffle-based shampoo, then smeared with the fish eggs, combed through and left to set: “Catherine discovered the caviar treatment last summer and was astounded by the difference it made to her hair.”

“She has an incredibly rich and vibrant natural hair colour but the creamy, almost oily nature of caviar really brings this out, making the colour even richer and making it so much more glossy.”