10 Best Kerastase Leave In Smoothing Hair Oil in The UK

Last updated on 13/08/2025

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Kérastase Elixir Ultime, Hair Oil Shine-enhancing Nourishing Conditioning Treatment, For Coloured Hair, With 4 Precious Oils and Imperial Tea Extract, L'Huile Rose, 100 ml

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Why We Love It

Offers powerful heat protection.
Boosts an irresistible shine.
Restores and enhances hair.

Main Highlights

L'Huile Rose is a multi-purpose, shine-enhancing oil with added heat protection. Enriched with four precious oils and Imperial Tea Extract, it restores the fibre and forms a protective film to preserve colour and offer irresistible shine
Weightlessly nourishing hair, whilst protecting from external aggressors and heat up to 230 degrees C. Hair is restored with brilliant shine and enhanced colour
Apply one to two pumps to wet or dry hair. Spread the product between the palms and apply to the lengths and ends. The oil can also be mixed with the Elixir Ultime mask to treat dry, thick and damaged hair

Kérastase Blond Absolu, Conditioning Leave-In Hair Serum, Overnight Treatment, For Lightened or Highlighted Hair, With Hyaluronic Acid & Edelweiss Flower, Sérum Cicanuit, 90ml

15% OffFree Shipping

Why We Love It

Repairs hair during sleep.
Prevents breakage and friction.
Leaves hair soft, detangled.

Main Highlights

Blond Absolu Serum Cicanuit is an overnight leave-in treatment for highlighted and bleached blonde hair. Enriched with Hyaluronic Acid and Edelweiss Flower, it hydrates and plumps hair fibres from within, reducing breakage and protecting the hair from friction whilst you sleep
Deep overnight repair that leaves no colouring or stains on bedding, For soft, detangled hair when you wake
Apply 2-4 pumps to dry or damp hair, evenly distribute from root to tip. Leave overnight. Use as often as required, depending on the degree of hair damage and fragility

Kérastase Nutritive Nourishing Hair Serum with Niacinamide, Overnight Leave-In Treatment for Dry Hair, Lightweight and Non-Greasy, 8H Magic Night Serum, 90 ml

23% Off

Why We Love It

Revitalizes dry hair overnight.
Battles frizz and extra volume.
No rinse needed in morning.

Main Highlights

8H Magic Night Serum by Kérastase is a beauty sleep high-nutrition serum for dry hair. This overnight treatment contains anti-dryness polymers for immediate care with a light, non-greasy finish. It also delivers essential nutrients that boost the formula’s ability to nourish and reinforce the hair.
Protects hair from frizz and extra volume caused by pillow friction. Refreshes hairs shine, strength and softness.
1. Spread a pump of serum in your hands and distribute this overnight hair treatment to the lengths and ends of your dry or damp hair. 2. No need to rinse in the morning. Tip: Apply 8H Magic Night Serum before bedtime.

Kérastase Gloss Absolu Hair Treatment Spray, Heat Protection for All Hair Types, with Glycolic Acid, Hyaluronic Acid & Wild Rose 190ml

10% OffFree Shipping

Why We Love It

Frizz-free hair for days.
Hydration and shine boost.
Easy to use on styled hair.

Main Highlights

Texturising and smoothing all-in-1 spray with a milky texture, ideal for those with hair prone to frizz. Enriched with Glycolic Acid for shine, Hyaluronic Acid for hydration and Wild Rose Oil for smooth, soft, glossy hair.
Experience 100 hours of soft, frizz-free hair with 87% more smoothness, and up to 4 days of hydration and gloss.
After washing hair with Gloss Absolu Shampoo, spray on damp or dry hair to texturise and define your locks.

Kérastase Première Anti-Frizz Filler Heat Protecting Hair Serum for Damaged Hair with Peptides 90ml [STEP 4- PROTECT & REPAIR]

21% Off

Why We Love It

Deeply repairs damaged hair.
Protects against heat styling.
Formulated with Peptides.

Main Highlights

The Sérum Réparateur Fondamental is an anti-frizz repair treatment for damaged hair, used before styling. This complementary thermo-protective treatment has a light, creamy texture to seal the cuticle scales of the hair fibre and protect the surface, while restoring the hair's strength and fluidity
The serum deeply repairs and moisturises the fibre, while protecting hair from heat up to 230°C. Hair regains 100 Percent of its original strength. Frizz is controlled for 72 hours
Apply to damp hair washed with the Bain Décalcifiant Réparateur shampoo. Do not rinse. Blow-dry and style

Kérastase Resistance, Conditioning Leave-In Scalp & Hair Serum, For Long Hair, With Ceramides, Sérum Extentioniste, 50ml

15% OffFree Shipping

Why We Love It

Repairs and strengthens damaged hair.
Reduces split ends effectively.
Easy application for convenience.

Main Highlights

Résistance Sérum is a concentrated hair serum treatment designed to achieve beautiful lengths in all hair types, especially damaged and sensitised hair. Enriched with Ceramides, it repairs fibres from deep within to improve elasticity, whilst reducing split ends, and lowering the risk of breakage
Activates and strengthens hair growth from the root. Heals surface damage by restoring and sealing hair follicles
Apply 3 pipettes of serum to the scalp once or twice per week. Massage in a circular motion with fingertips, then proceed to styling as per your usual routine

Kérastase Nutritive, Split Ends Hair Serum for Dry Hair, Nourishing Leave-In Oil Treatment, Ultra-Sealing Formula with Anti-Dryness Polymers, Adds Smoothness and Shine, Nutri-Supplement, 50 ml

23% Off

Why We Love It

Seals and nourishes split ends.
Provides instant smoothness and shine.
Locks in nutrition durably.

Main Highlights

Nutritive Split Ends Serum by Kérastase is a high-nutrition ultra-sealing serum for dry hair with split ends. Its ultra-concentrated formula helps to nourish and replenish dry ends to instantly restore a smooth, even look.
Instant smoothness and improved shine. It creates a protective barrier to lock in nutrition and durably fight dryness.
1. Apply 5 drops of this split ends serum to wet ends, as a leave-in treatment. 2. Style as desired. Do not rinse. If irritation occurs reduce the frequency of use. Nourishing split ends serum can be used after the entire Nutritive routine.

Kérastase Nutritive, Hydrating Scalp Serum for Dry Hair, With Niacinamide and Vitamins, Moisturising and Revitalising, Fast Absorbing and Non Greasy, Nutri-Supplement, 90 ml

23% Off

Why We Love It

Deeply nourishes dry hair.
Provides immediate hydration boost.
Enriched with essential vitamins.

Main Highlights

Nutri-Supplement Scalp Serum by Kérastase is a moisturizing scalp serum for dry scalps. This is our ultimate scalp treatment: a niacinamide serum that provides vitamins to deeply nourish dry hair. Acting like a nutrient supplement for the scalp, it has a milky, fast-absorbing texture.
Immediate hydration boost for dry scalps. Moisturises the scalp and leaves it feeling refreshed, healthy and immediately more comfortable. Enriched with vitamins.
1. Apply section by section on dry or damp scalp (2 to 4 doses depending on hair thickness). 2. Massage to distribute evenly. 3. Blow dry, do not rinse. Use as often as needed.

Kérastase Elixir Ultime, Oil-infused Lightweight Shine Conditioning Treatment, For Dull Hair, With Five Precious Oils, Masque Elixir Ultime, 200ml

7% OffFree Shipping

Why We Love It

Regenerates and strengthens hair.
Enriched with precious oils.
Leaves hair brilliantly shiny.

Main Highlights

Masque Elixir Ultime nourishing hair mask regenerates, strengthens, and illuminate dry, dull hair. Enriched with 5 precious oils, Marula, Camellia, Corn Germ, Pracaxi, and Argan Oil; hair is left nourished and softened as a result of emollient and regenerating properties
Intensely moisturising and revitalising from within, leaving hair with unparalleled, brilliant shine
After washing with Bain Elixir Ultime shampoo, apply a small amount to towel-dried hair, focusing on lengths and ends only. Massaging gently and evenly, ensuring the cream mask penetrates all strands. Leave for 5-10min, emulsify, and rinse thoroughly

Kérastase Specifique, Hydrating & Smoothing Conditioning Hair Mask, For Oil-prone & Sensitive Scalps, With Rhamnose & Complex AOX, Masque Hydra-Apaisant, 200ml

23% Off

Why We Love It

Hydrates and smooths hair.
Calms irritation and itching.
Leaves hair feeling soft.

Main Highlights

Masque Hydra-Apaisant is a hair mask designed to hydrate and smooth oil-prone hair and sensitive scalps. Enriched with Rhamnose and Complex AOX; scalp irritation is calmed and hair is left feeling nourished, supple, and soft to the touch
Calms irritated and itchy scalps, whilst hydrating, nourishing and smoothing hair follicles. Hair is left feeling refreshed and feels soft and supple to the touch
Apply to clean, towel-dried hair. Part hair, and distribute mask evenly to the root area. Spread through lengths and ends, massage gently. Leave in for 2-3min. Rinse thoroughly

8.7

Excellent

Save 23%

We scanned 411 products

We reviewed these offers relevant to the Kerastase Leave In Smoothing Hair Oil within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like KÉRASTASE, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Kerastase Leave In Smoothing Hair Oil in the market, we considered we took a deep dive into 2056 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Kérastase Elixir Ultime, Hair Oil Shine-enhancing Nourishing Conditioning Treatment, For Coloured Hair, With 4 Precious Oils and Imperial Tea Extract, L'Huile Rose, 100 ml. We love many things about this product by KÉRASTASE. What sets it apart from the competition is Offers powerful heat protection, Boosts an irresistible shine, Restores and enhances hair.
The best value product for most shoppers and where user satisfaction is continuously the highest is Kérastase Blond Absolu, Conditioning Leave-In Hair Serum, Overnight Treatment, For Lightened or Highlighted Hair, With Hyaluronic Acid & Edelweiss Flower, Sérum Cicanuit, 90ml by KÉRASTASE based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Kerastase Leave In Smoothing Hair Oil and the best cost-to-value ratio is Kérastase Specifique, Hydrating & Smoothing Conditioning Hair Mask, For Oil-prone & Sensitive Scalps, With Rhamnose & Complex AOX, Masque Hydra-Apaisant, 200mlat KÉRASTASE with a 23% discount.
Our list of the best Kerastase Leave In Smoothing Hair Oil is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Kerastase Leave In Smoothing Hair Oil in The UK

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Kérastase Elixir Ultime Hair Oil, Nourishes Dull Hair, For All Hair Types, Strengthens and Protects Hair From Heat, With Argan and Camellia Oil, L'Huile Originale, 30ml

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Kérastase Nutritive, Beautifying Detangling Blow-Dry Mist for Fine to Medium Dry Hair, Heat Protectant, Lotion Thermique Sublimatrice, 150 ml

Bed Head by TIGI After Party Super Smoothing Cream – Anti Frizz hair styling product with humidity protection for frizzy, dull or coarse hair, 100ml​

Kérastase Blond Absolu, Intense Blonde Strengthening Hair Oil, For Sensitised Lightened or Highlighted Hair, With Hyaluronic Acid & Edelweiss Flower, Huile Cicaextreme, 30ml

Kérastase Curl Manifesto, Nourishing Oil Styling and Finishing Treatment, For Curly Hair, With Manuka Honey and Ceramide, Huile Sublime Repair, 50 ml

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We scanned 411 products

We concluded that:

Bed Head by TIGI After Party Super Smoothing Cream – Anti Frizz hair styling product with humidity protection for frizzy, dull or coarse hair, 100ml