The clever £10 beauty trick Helen Mirren swears by for healthy hair, skin and nails

On the left, image of Helen Mirren smiling with grey hair in a bun and wearing red lipstick and a black blazer, on the right, Helen Mirren pictured at the same event on the side - with a white marble background with graphics and oil swatches. .

Ever wondered how Helen Mirren achieves and maintains her healthy-looking hair, skin and nails? Well, wonder no more as we've uncovered the one beauty trick behind it all...

You might've already heard of the link between castor oil for eyelash growth, but the yellow-hued vegetable oil is actually a popular ingredient used within beauty products. The ingredient in question is known and loved for its ability to naturally hydrate, condition and nourish the hair, skin and nails. For these very reasons, castor oil has been incorporated into the beauty routines of many, including Dame Helen Mirren.