It's no secret that the Duchess of Cambridge has flawless skin. The 35-year-old mother of two (soon to be three) manages to look radiant in every photo no matter what the occasion. So, what is Kate Middleton's go-to skincare product? Apart from the gentle muslin washcloths her makeup artist revealed she uses to exfoliate, the Duchess actually has one natural item to thank for her complexion: rosehip oil.

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According to an Us Weekly report, a source close to the Duchess revealed that "Kate continues to use rosehip oil in her daily skincare regiment. She loves the effect it has on her skin. [Her mother] Carole [Middleton] is also a fan." Duchess Kate prefers Trilogy Rosehip Oil, in particular, which has helped her to maintain flawless skin throughout her third pregnancy and possibly also through her pregnancy with Princess Charlotte. Trilogy's formula contains 80 percent fatty acids and is completely organic.

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Trilogy Certified Organic Rosehip Oil, $17, amazon.com

Full of vitamins, antioxidants and essential fatty acids, rosehip oil has a number of benefits for both your skin and your hair. Here are a five key ways in which this simple bottle of this oil can be a complete game-changer for your daily beauty routine.

Anti-Aging

Rich in Vitamin A, which is known to help fight against age spots and wrinkles, rosehip oil is great for anti-aging. It's also packed with molecules that are small enough to penetrate deep layers of the skin, improving moisture and collagen levels, while reducing wrinkles and fine lines.

Moisturizing

No one wants dry, flaky skin, which is something you can completely avoid by using just a little bit of natural rosehip seed oil everyday. Because it contains 80 percent fatty acids (omega 6 and omega 9), just adding a few drops of the oil to your skin once in the morning and once at night will help with dehydrated, itchy complexions.

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Fights Pollutants

Harvested from the seeds of rose bushes, rosehip oil is filled with antioxidants, which help to reinforce the skin's protective barrier. This added level of protection is crucial when it comes to shielding the skin from the pollutants we encounter on an everyday basis, like UV rays and car fumes.

Scar Treatment & Eczema

Not only do the fatty acids and Vitamin A in rosehip oil moisturize the skin, but they also promote skin regeneration, and can improve skin flexibility and permeability. This means that rosehip oil products can improve skin texture and even reduce the appearance of acne scars or stretch marks.

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Rosehip oil is not only good for your face, but it can also benefit your hair and skin affected by eczema. Check out these other rosehip oil products to reap the full benefits of this naturally hydrating and illuminating beauty secret.

Buy Now Rosehip Seed Facial Cream, $17.71

Buy Now Sukin Rosehip Oil Hydrating Day Cream 120ml, $26

Buy Now Nourish Rejuvenating Rose Hip & Rosewater Body Oil Mist, $15.30

Buy Now Body Wonders 100% Pure Rosehip Seed Essential Oil, $13.99