As a fellow brunette, its no secret that I quite simply aspire to have Kate Middletons hair (Im sorry, but who doesnt?). Regularly experimenting with her hair, weve seen the Princess of Wales embrace warmer tones with some gorgeous honey highlights before, but weve also seen her opt for dark, mocha tones during those winter months. Despite changing her hair quite often, Kate always seems to have an envious head of hair, which looks ridiculously glossy and somewhat glass-like. You ask for her secret? Well, turns out its the Kérastase Nutritive Gentle Hydrating Shampoo.

　　©Chris Jackson/Getty Images While its widely said that the Kérastase shampoo is supposedly Kates go-to for rinsing and repeating, weve spotted that the royal-approved hair product is, in fact, on sale right now, for just under £18 in the Amazon Spring sale, along with many other cult-classic beauty products.

　　Kérastase Nutritive Gentle Hydrating Shampoo

　　31% off in the Amazon Spring Sale

　　KerastasePrice: £18.20 (was £25.05)View offerAlternative retailersSephora£22.05View offerBoots£22.10View offerLookfantastic£22.55View offer If youre looking for a nourishing and strengthening shampoo, look no further than the Princess favourite. This gentle, protein-enriched shampoo will deeply cleanse your hair and replenish its softness while also revitalising its shine. Its a no-brainer!

　　A customer said: Since using this shampoo, my hair is extremely shiny and smooth and it’s much easier to blow dry and style. I would definitely recommend this shampoo if you have dry hair and others included: I really like the brand Kerastase, I’ve used it for years. The shampoo lasts ages too, I have thick hair but it only takes a small amount to do the job….go on buy it!

　　Kérastase Nutritive, High Nutrition Ultra-Light Conditioner

　　23% off

　　KerastasePrice: £25.90 (was £33.85)View offerAlternative retailersSephora£29.25View offerBoots£29.32View offerLookfantastic£30.45View offer How about finishing off your order with the matching conditioner? Perfect for medium to dry hair or those who use a lot of heat on their hair, this conditioner contains lipids and vitamins to help nourish, detangle, and smooth even the driest hair.

　　Wondering what makes this Kérastase shampoo so special? The Kérastase Nutritive range is the cornerstone of any good haircare routine, particularly if you regularly style and use heat on your hair, like Kate does. Delivering nourishing results from your scalp to your ends, this Kérastase shampoo quenches the hair with its lightweight, creamy gel-like texture, leaving the hair feeling hydrated, soft, and with an ad-worthy shine after every wash.

　　The ultimate way to elevate your haircare rituals, this indulgent shampoo is perfect for those who have dry to very dry hair, or for those who regularly bleach their hair and need an all-in-one product to give it some serious TLC.

　　Curious about what other haircare products our Princess swears by? Well, weve done a deep dive into Kate Middletons mane, and through snippets that her trusted hairdresser Amanda Cook Tucker once shared of her royal tool kit on Instagram (however, it sadly got taken down), weve found the products the Princess reportedly has used on her hair before below.

　　SHOP: Kate Middletons favourite haircare products 1. LOreal Paris Elnett Extra Strong Hold Hair Spray, 200 ml

　　25% off

　　LOreal/AmazonPrice: £3.56 (was £5)View offer Confirmed to appear in Tuckers royal tour tool kit, this affordable hair spray is what the established hairdresser has used to hold Kate Middletons bouncy blowdries for many different occasions. Its a must-have for keeping those locks in place.

　　2. Charles Worthington Volume Bounce Body Booster Mousse

　　Charles Worthington/AmazonPrice: £13.73View offerAlternative retailersBoots£8.99View offer While Kates thick hair does have a lot of natural body, Amanda Cook Tuckers kit reportedly featured this popular drugstore mousse. Keeping things lifted at the roots, this type of product always helps to hold any hairstyle - from bouncy blowdries to textured beachy waves.

　　3. Wella Eimi Ocean Spritz, 150ml

　　Wella/AmazonPrice: £9.48View offer For a more beachy, textured look, Amanda Cook Tucker always picks up this Ocean Spritz from affordable haircare brand Wella. For under £10, you cant go wrong.

　　Christina Geggus is a Commercial Content Writer at Closer. She covers fashion, beauty, homes and anything trending. When not writing, she can be found at her favourite Blaze gym class or on long walks with her loved ones with an overpriced coffee.