This product is the reason you'll never see Sienna Miller with frizzy hair
Sienna's hairdresser's go-to product is a one-stop shop for hydrated and smooth locks


There is plenty to envy when it comes to Sienna Miller, but her gorgeously smooth blonde hair has to rank high on that list. Her secret? A hard-working cream that will cost you less than £30...
Avoiding frizz can feel like an impossible task, particularly in wet autumnal weather, and even some of the best hair oils on the market can't be relied on to keep flyaways and hard-to-tame tresses at bay throughout jam-packed days.
Thankfully, celebrity hairstylist Sam McKnight has revealed exactly how he gives Sienna Miller her signature soft waves, and the answer couldn't be simpler. Whether you want to know how to get healthier hair or you're desperate to get your ends as sleek as Sienna's, you'll want this miracle cream in your arsenal.
Designed to control, define, and nourish, this cream softens and conditions hair whilst adding light hold that will keep frizz and flyaways under control. With the hydration of an oil without any greasiness, it's the ultimate styling product that will boost shine and keep hair in place.
Sienna Miller at the Chloé Womenswear Fall/Winter 2024-2025 show
McKnight told British Vogue he kept Sienna's hair "defined and frizz-free with my Dressed to Kill cream," for the Chloé runway show earlier this year, and it's clear from her incredible beachy waves at the event that it did just the trick.
We're sure that regular hair treatments and brilliant heat styling by top hairdressers are to thank too, but Sam McKnight products are easily some of the best on the market for fuss-free and effective styling - and the results speak for themselves.
Sienna has had her hair styled by Sam McKnight on countless occasions, so it's clear she is a fan of the brand. We can't say we've ever seen her hair look less than perfect, and if we can get similarly frizz-free and conditioned locks for just £26, we're on board.
Shop more Hair by Sam McKnight
Yes, it's on the pricey side, but this is one of the best hair masks if your hair is in desperate need of repair. Formulated with dual-acting voluminis™ that visibly thicken the hair, it will make hair stronger and more volumised.
If you find hair oils tend to be too heavy for your hair, this is the one to try. It has a water-like consistency that hydrates without weighing the hair down or leaving a greasy residue.
If you find yourself frequently relying on dry shampoo but hate how itchy it makes your scalp, you need to try these wipes. You use them to cleanse your roots and follow up with a very quick blow dry and your hair looks freshly washed - a true miracle product.
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Amelia joined woman&home in 2022 after graduating with an MA in Magazine Journalism from City University and she is now a senior fashion and beauty writer. She began building her career as a lifestyle journalist after completing a fashion journalism course at the Condé Nast College of Fashion & Design in 2019, writing for a variety of titles including OK!, New!, and Notion on topics such as sustainable fashion and entertainment.
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