London - Supermodel Miranda Kerr can afford the costliest products on the planet, but last week she revealed that her luminous skin is all down to a slick of rosehip oil.

“I put it on at night and I wake up glowing,” she said. Not surprisingly, those 11 little words sparked a rush on rosehip as beauty addicts cleared bottles of the amber-coloured oil from the shelves of chemists and health food shops across the country.

Derived from the wild rose bushes that grow high in the Chilean Andes, where the altitude and pollutant-free environment produce the highest quality rosehips, the oil’s benefits have been known by the indigenous population for hundreds of years.

Extracted from the seed of the fruit, it makes an anti-ageing oil that’s more potent - and far cheaper - than the more well-known face oils, such as rose otto.

So just why is it such a wonder oil? Not only is it rich in vitamin C and high in omega 3 and 6 fatty acids, known to heal scar tissue, it’s also a great source of retinoic acid, which studies show reduces the appearance of wrinkles and brightens skin.

This combination means that it’s particularly good for fine lines and pigmentation problems - two of our most common skin complaints.

Another key benefit is its ability to sink into skin without leaving a greasy finish, a common gripe with many facial oils that you can apply only at night for fear of shiny cheeks.

“Rosehip is a dry oil, so it penetrates to the deepest layers of the skin where it regenerates skin cells, producing more collagen and elastin,” explains aromatherapist Denise Leicester, founder of organic skincare brand Ila.

“It’s so light, you can even apply a small amount over make-up to perk up tired office skin, yet it is so moisturising that studies prove it reduces the appearance of scars and burns, too.

“My inbox is buzzing with women who’ve recently had surgery who say their scars have dramatically reduced after using rosehip.”

It is results like these that prompted Kate Middleton’s facialist, Deborah Mitchell, to add rosehip oil to her signature LIA therapy treatment, which is also a favourite of Gywneth Paltrow and Victoria Beckham.

“Rosehip is perfect for all ages and skin types, including those with sensitive skin conditions like rosacea and acne. I add a drop to moisturiser to boost the results - Kate loves it because it gives skin a luminous glow,” says Deborah.

You can even do your own treatment at home. “Mix 15ml of extra virgin olive oil with one drop of rosehip oil and apply to damp skin for an intensive night treatment,” advises Deborah.

And if you’ve had a bad day, then drop a splash in your bath. “Rosehip lifts your spirits. It releases endorphins that make you smile,” she adds.