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Hair by Sam McKnight Deals

Top Hair by Sam McKnight Deals & Price Drops for March 2026

Explore verified Hair by Sam McKnight discounts and price drops updated in the last 30 days.

Cool Girl Volume & Definition Kit

Cool Girl Volume & Definition Kit

Discover the secret to effortlessly chic hair with the Cool Girl Volume & Definition Kit from Hair by Sam McKnight. This award-winning duo combines two of Sam's most iconic formulas to deliver instant volume, perfect texture, and smooth definition. Transform your look in seconds with this powerful pair, available exclusively at sammcknight.com. Begin with the legendary Cool Girl Texture Mist, hailed by WWD Magazine as one of the "Greatest Hair Products of All Time." A few light spritzes lift hair from flat to full, creating that coveted done-yet-undone finish that is Sam McKnight's signature. It builds lasting body and a touchable, lived-in texture without any stickiness or residue. Next, lock in the style with the Happy Endings Nourishing Balm. This multitasking hero, celebrated by Marie Claire and Tatler, is your answer to frizz and flyaways. Smooth a small amount through your lengths to defluff, defrizz, and add sleek definition. It provides weightless hydration, helps repair the appearance of split ends, and imparts a brilliant, healthy shine. In consumer trials, 100% reported that frizz was instantly reduced and hair felt healthier and nourished after using Happy Endings. This kit is your shortcut to a flawless, salon-quality transformation every day. Experience the perfect balance of volume and control, crafted by the expert hands of Sam McKnight. Visit Hair by Sam McKnight online to achieve cool-girl hair with effortless ease.
£64.00
£50.0022% OFF
Light Cleanse Hair and Scalp Shampoo

Light Cleanse Hair and Scalp Shampoo

Discover the award-winning Light Cleanse Hair and Scalp Shampoo from Hair by Sam McKnight, honored as the Best Daily Shampoo 2025 by Woman & Home. This expertly crafted formula is designed to gently cleanse, soften, and enhance shine while being exceptionally kind to your scalp's natural biome. It is the ideal daily solution for maintaining scalp nourishment and promoting healthy hair growth, especially for those with fine or delicate hair. Enriched with hydrating Aquaxyl and powerful antioxidant botanical extracts, this shampoo effectively removes product buildup and impurities without stripping away your hair's essential natural oils and moisture. The result is a perfectly balanced cleanse that supports ultimate scalp health and leaves your hair feeling refreshed, soft, and full of luminous shine. For the complete haircare ritual, pair this shampoo with our Light Nourish Conditioner. Visit our website at sammcknight.com to explore this perfect pairing and enjoy a special 10% savings when you purchase the set. Elevate your daily routine with this professional, scalp-loving formula from Hair by Sam McKnight.
£112.00
£84.0025% OFF
Rich Nourish Conditioner

Rich Nourish Conditioner

Discover the ultimate solution for thirsty, damaged, or color-treated hair with our Rich Nourish Conditioner. This essential treatment is expertly formulated to deeply revitalize your strands, restoring their natural health and vibrancy. Nutrient-rich Castor and Sunflower seed oils work in harmony to deliver intense moisture where your hair needs it most. Our unique blend includes powerful repairing vitamins that help to lock in hydration, effectively controlling frizz and smoothing the hair cuticle. You will notice a remarkable difference as your hair becomes softer, shinier, and far more manageable with every use. This conditioner is a vital step for anyone seeking to give their hair the extra care and attention it deserves. For the best results, pair this deeply nourishing conditioner with our Rich Cleanse Nourishing Shampoo. When you purchase both together at Hair by Sam McKnight, you can save £10 on your essential hair care routine. Visit sammcknight.com to explore this perfect pairing and transform the feel and look of your hair. Embrace a regimen that prioritizes true nourishment and visible, healthy results.
£140.00
£84.0040% OFF
Shine Kit

Shine Kit

Discover the secret to radiant, healthy-looking hair with the Shine Kit from Hair by Sam McKnight. This award-winning duo, featuring Woman & Home's Best Hair Oil 2024 and the Stylist's Best Hairspray 2023, is expertly crafted to deliver instant luminosity and lasting smoothness for all hair types. Experience weightless hydration that never feels heavy or greasy. Our unique formula combines three natural shine enhancers: Argan, Sunflower, and Camellia seed oils. This ultra-light complex deeply nourishes your strands, leaving them feeling luxuriously soft, light, and incredibly smooth with a photo-ready flash of shine. The professional hairspray provides flexible, reliable hold while also offering heat protection up to 230ºC, shielding your hair during styling. Together, they create a complete regimen for stunning results. In user trials, an impressive 97% reported their hair looked and felt healthier, while 84% said their hair was the shiniest it has ever been. Perfect for fine hair that craves brilliance without bulk, this kit delivers transformative results. As beauty journalist India Knight noted, it’s truly a weightless wonder. Visit sammcknight.com to explore this essential kit and elevate your daily hair care routine with proven, award-winning performance.
£58.00
£46.0021% OFF
Cool Girl Volume Nourish Conditioner

Cool Girl Volume Nourish Conditioner

Discover the secret to weightless hydration with our Cool Girl Volume Nourish Conditioner. This innovative formula is expertly crafted to deliver intense nourishment without ever compromising on your hair's natural bounce and fullness. It’s the perfect solution for anyone seeking irresistibly healthy hair that feels stronger and looks visibly thicker. At the heart of this conditioner is our powerful volumising active, Voluminis™, clinically shown to give hair up to 30% more volume and thickness. We’ve enriched this with Fermented Rice Water, a nutrient-rich ingredient that infuses each strand with strengthening proteins, restorative amino acids, and protective antioxidants. Together, they work to fortify your hair from within, enhancing its natural body and resilience. This conditioner is designed to complement your styling routine, providing the perfect foundation for volume that lasts. For the ultimate haircare ritual, pair it with our Cool Girl Volume Shampoo. When you buy both together at Hair by Sam McKnight, you save £10, making it easier to achieve your best hair yet. Visit sammcknight.com to explore this duo and transform your hair with professional-grade formulas that nourish, thicken, and volumise for a truly cool girl finish.
£140.00
£84.0040% OFF
LAZY GIRL BIODEGRADABLE HAIR CLEANSE CLOTHS

LAZY GIRL BIODEGRADABLE HAIR CLEANSE CLOTHS

Discover the ultimate convenience for your hair care routine with the Lazy Girl Biodegradable Hair Cleanse Cloths from Hair by Sam McKnight. Perfect for a quick refresh, these innovative cloths cleanse and revive your roots, fringe, and hairline without the need for a full wash. Ideal for busy mornings, post-workout sessions, or while traveling, they provide an instant solution for maintaining fresh, clean hair anywhere. Crafted with hair-loving ingredients, each cloth is designed to be gentle yet effective, leaving your hair feeling revitalized and looking its best. As a proud winner of the Elle Future of Beauty Award 2023, this product represents a breakthrough in beauty innovation. The cloths are certified compostable, aligning with eco-friendly values and reducing environmental impact. Available at sammcknight.com, these cleanse cloths are the perfect clean hair hack for hot, humid days or festival weekends. Embrace a smarter approach to hair care that saves you time while supporting sustainable practices. Experience the award-winning quality and effortless refresh that Hair by Sam McKnight is known for, and keep your hair feeling fabulous with minimal effort.
£17.00
£12.0029% OFF
Light Nourish Conditioner

Light Nourish Conditioner

Discover the award-winning formula that earned the prestigious Wardrobe Icons Best Conditioner 2023 title. Hair by Sam McKnight's Light Nourish Conditioner is your secret to effortlessly smooth, shiny, and manageable hair. This versatile treatment works beautifully as both a rinse-out and a leave-in conditioner, delivering a luminous shine that turns heads. Specially crafted with a blend of amino acid-rich botanical extracts, it provides deep nourishment without any heaviness. Its lightweight texture is perfect for finer hair types, ensuring no weigh-down while it actively detangles, smooths, and tames frizz. The advanced formula creates a protective barrier on each strand, locking out humidity for ultimate frizz control and a sleek finish. For the best results and exceptional value, pair it with our Light Cleanse Shampoo. Visit sammcknight.com to explore the perfect haircare duo and enjoy a special saving of £10 when you purchase both together. Elevate your daily routine with this iconic, results-driven conditioner from the experts at Hair by Sam McKnight.
£140.00
£84.0040% OFF
SMOOTH & FRIZZ-FREE KIT

SMOOTH & FRIZZ-FREE KIT

Achieve a salon-perfect, smooth blowout at home with the Smooth & Frizz-Free Kit from Hair by Sam McKnight. This expertly curated duo combines two of Sam's award-winning formulas to deliver a frizz-defying, high-shine finish that lasts. Start with the Save the Do Blow Dry Style Starter, a luxurious heat protectant celebrated by Woman and Home as the Best Luxury Heat Protectant of 2023. It creates a protective shield to guard your hair from styling damage. Follow with the Happy Endings Nourishing Balm, a multitasking hero praised by Marie Claire and Tatler. This ultra-light, conditioning balm works to instantly hydrate and smooth your strands. Its innovative Vegabead technology, featuring mushroom-derived chitosan, helps seal up to 50% of split ends on contact and smooths the hair cuticle for a flawless, reflective shine. Together, these products are your secret weapon against fluff and flyaways. In testing, 100% of users reported instantly reduced frizz and hair that felt healthier and nourished. As noted by India Knight in The Sunday Times Style Magazine, this kit is "incredibly useful and effective if your hair is prone to fluff or frizz." Visit sammcknight.com to discover the effortless path to smoother, sleeker, and brilliantly shiny hair that stays beautifully in place.
£64.00
£50.0022% OFF
Rich Cleanse Nourishing Shampoo

Rich Cleanse Nourishing Shampoo

Discover the award-winning hydration your hair deserves with Rich Cleanse Nourishing Shampoo from Hair by Sam McKnight. Recognized as the Best Hydrating Shampoo of 2025 by Marie Claire, this premium cleanser is designed to transform dry, damaged strands into a cascade of vibrant, smooth, and deeply nourished locks. Our unique formula is certified Kind to Biome®, ensuring it cares for your scalp’s natural balance while delivering exceptional results. We harness the power of strengthening plant Keratin to rebuild hair integrity from within. Colour-protecting Quinoa Pro works to shield your hue from fading, keeping your color radiant and true. Hydrating Sugar Beet provides an intense moisture surge to repair parched ends and revitalize the entire hair shaft. This shampoo is the ultimate answer for hair that is visibly thirsty and calling out for moisture. It cleanses gently yet effectively, washing away impurities while infusing each strand with lasting nourishment from root to tip. The result is hair that feels stronger, looks shinier, and behaves with unparalleled smoothness. For a complete hair revival ritual, pair this shampoo with our Rich Nourish Conditioner. Visit our official website at sammcknight.com to explore the full collection and enjoy special savings. When you purchase the shampoo and conditioner together, you save £10, making it easier to invest in a professional haircare routine that delivers award-winning hydration and visible repair. Treat your hair to the nourishment it craves and experience the Sam McKnight difference.
£112.00
£84.0025% OFF
Cool Girl Volume Cleanse Shampoo - Full & Travel Size Duo

Cool Girl Volume Cleanse Shampoo - Full & Travel S...

Take your cleansing routine to new heights with our science-backed, Kind to Biome® certified volumising shampoo. Containing hair volumising and thickening active Voluminis™, hydrating Pro-Vitamin B5 and protein-packed Fermented Rice Water to soothe, strengthen and restore shine. *Voluminis™ gives up to 30% more volume and thickness *95% users said their hair had more body and shine *80% experienced immediate fullness, root lift and more voluminous hair
£44.00
£28.0036% OFF
Happy Endings Nourishing Balm - Full & Travel Size Duo

Happy Endings Nourishing Balm - Full & Travel Size...

Marie Claire's Best Multitasker 2023 STYLE WITH CARE • DEFRIZZ • SEAL SPLIT ENDS Defrizz, defluff and define without weighing hair down. Instantly seal 50% of split ends. With just a pump or two of Sam's multi award-winning hair balm you can nourish, smooth and style all textures including fine hair. That's down to conditioning Pro-Vitamin B5 and Shea Butter, plus mushroom-derived Chitosan microcapsules for softness and extra shine. * 100% said frizz and flyaways were instantly reduced* * 100% said hair felt instantly healthier and nourished* * 94% said hair was softer and smoother* * Stylist's Editor's Choice 2023 * Tatler's Best Definer 2024
£58.00
£36.0038% OFF
Modern Hairspray Styling Mist with Heat Protection Duo - Full & Travel Size

Modern Hairspray Styling Mist with Heat Protection...

Best Hairspray - W.Icons Beauty Icons Awards 2024 BUILDABLE HOLD & SHINE • FLEXIBLE STYLING • TOUCHABLY SOFT Hold, set and heat protect up to 230ºC with our shine-boosting styling partner. This multi-award winning fine hairspray keeps hair touchably soft, then brushes out with ease. Infused with Sam's signature scent created with Perfumer H. Perfect to use before curling, straightening, and taming flyaways to achieve glossy, sleek styles with a high-shine finish - but without the crunch. Hairspray like you've never seen before. * Best Hairspray - Stylist Best Beauty Awards 2023 * Elle Future of Beauty Winner 2024 - Ross Kwan's Pro Pick
£38.00
£26.0032% OFF
Cool Girl Superlift Root Volumising Spray - Full & Travel Size Duo

Cool Girl Superlift Root Volumising Spray - Full &...

LASTING ROOT LIFT • NATURAL VOLUME • HUMIDITY RESISTANT SuperLift for voluminous dos. This lightweight spray lifts, adds volume and hold to roots once blow dried for fuller, thicker-looking hair. *As seen on This Morning PS: Read Sam's 6 tips for long-lasting volume - here
£40.00
£26.0035% OFF
Lazy Girl Dry Shampoo - Full & Travel Size Duo

Lazy Girl Dry Shampoo - Full & Travel Size Duo

Wardrobe Icon's Best Dry Shampoo INSTANT REFRESH • SOFT BODY AND TEXTURE • ULTRA LIGHTWEIGHT Sam's cult dry shampoo. Revitalize your hair instantly with Lazy Girl Dry Shampoo. This ultra-lightweight mist not only refreshes your locks between washes but also adds soft body, volume, and texture-making it a styling essential for both lazy days and busy schedules. Infused with a fine botanical fragrance inspired by Sam's garden. *As seen in Trinny London
£36.00
£24.0033% OFF
Sundaze Sea Spray - Full & Travel Size Duo

Sundaze Sea Spray - Full & Travel Size Duo

Capture the spirit of Ibiza summer with sea-kissed texture and definition. It's summer in a bottle. - Natural sea salt with Sunflower Seed Extract creates soft, defined, piecey beach texture - Protects hair from UV damage - Enriched with conditioning Pro Vitamin B5, Hibiscus Flower Extract, and Castor Oil for a weightless, protective finish * As seen on This Morning * Best Styling Product - Who What Wear's Next In Beauty 2023 * As featured in India Knight, The Sunday Times
£40.00
£26.0035% OFF
Cool Girl Volume Nourish Conditioner - Full & Travel Size Duo

Cool Girl Volume Nourish Conditioner - Full & Trav...

Hydrate without weight with our new volumising conditioner. Formulated with superhero volumising and thickening active Voluminis™ and enriched with Fermented Rice Water to deliver nourishing anti-oxidants, strengthening proteins and restorative amino acids, leaving your hair irresistibly healthy and full of body. *Voluminis™ gives up to 30% more volume and thickness
£44.00
£28.0036% OFF
Cool Girl Barely There Texture Mist - Full & Travel Size Duo

Cool Girl Barely There Texture Mist - Full & Trave...

INSTANT VOLUME • EFFORTLESS TEXTURE • LASTING BODY Go from flat to full in seconds. The iconic go-to volumising texturiser creates those effortless, sexy, tousled styles in an instant. Spritz in, mess it up, for Sam's signature 'done, undone' Cool Girl look. Expertly formulated for all hair types and textures, and infused with our perfume-level fragrance. Brushes with ease. As Vogue says, it's Sam in a can. *Our best-seller *Awarded "Greatest Hair Products of All Time" - WWD Magazine
£40.00
£28.0030% OFF
Discovery Kits

Discovery Kits

Elevate your hair game with my new Discovery Kit. Each kit contains an edit of my five award-winning Super Stylers in mini size, that help you achieve any look, anywhere and with ease. Presented in our Cool Girl Travel Bag. Whether you're creating sun-kissed waves, sleek strands, or voluminous styles, or you want to find the right products for your 'Do - my Discovery Kit is for you. *Offer ends soon - stock are limited
£96.00
£60.0038% OFF
Shine Kits

Shine Kits

Get instant luminous shine and lasting smoothness with Woman & Home's Best Hair Oil 2024 and Stylist's Best Hairspray 2023. - Add weightless hydration and photo-flash shine - An ultra-light complex of 3 natural shine enhancers: Argan, Sunflower and Camellia seed oils leaves hair feeling luxuriously soft, light and smooth - Hold, set and heat protect up to 230ºC *97% said their hair looked and felt healthier *84% said their hair was the shiniest it's ever been *Read how to care for your fine hair here. "The best hair oil I've ever used on fine hair. Weightless is an overused word but.weightless" - India Knight, Beauty Journalist
£58.00
£46.0021% OFF
Cool Girl Volume and Definition Kit

Cool Girl Volume and Definition Kit

Sam's award-winning hair heroes-Cool Girl Texture Mist and Happy Endings Nourishing Balm-are the ultimate duo for instant volume, texture, and frizz-free definition. A few spritzes of "Greatest Hair Products of All Time" Cool Girl Texture Mist takes hair from flat to full, creating Sam's signature done/undone finish in seconds. To add definition, follow with Happy Endings Nourishing Balm, smoothing it through the lengths to defrizz, defluff, and define. The perfect way to add weightless hydration, split-end repair, and shine. An effortless transformation with flawless results. *Happy Endings - Marie Claire's Best Multitasker 2023; Tatler's Best Definer 2024 *100% said frizz and flyaways were instantly reduced and hair felt instantly healthier and nourished with Happy Endings *Awarded "Greatest Hair Products of All Time" - WWD Magazine
£64.00
£45.0030% OFF
Rescue Me edit

Rescue Me edit

Give in to wanderlust with the perfect travel size Lazy Girl, Cool Girl and Lazy Girl Biodegradable Hair Cleanse Cloths. Not just for travel - pop in your bag for instant on-the-go touch ups.
£41.00
£34.0017% OFF

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