10 Best Keratin Leave In Hair Treatment in The UK

Last updated on 09/08/2025

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Why We Love It

Infused with bamboo extract.
Strengthens and smooths hair.
Lasts up to 5 months.

Main Highlights

NATURAL SMOOTHING: Free Smoothing Treatment is a treatment infused with bamboo extract, hyaluronic acid, shea butter bio ester, and hydrolyzed keratin that tames and straightens frizzy and curly hair while rejuvenating and protecting the hair. The treatment will make your hair extremely smooth, shiny, soft, and easy to manage.
HAIR RESTRUCTURING AFFECTS: Our Hair Keratin Treatment can help strengthen brittle hair, eliminate frizz, and give you more manageability, with a combination of natural ingredients. It has a complex of actives that interacts with the capillary structure, leaving hair smooth, replacing the lost lipid layer, and promoting an intense repair of capillary wear levels.
LONG-LASTING: This treatment is formulated for medium to coarse hair and has been proven to deliver frizz-free, irresistibly smooth results that will last up to 5 months when combined with our aftercare essential products. Our revolutionary Smoothing Treatments and aftercare essentials combined have all you need to treat and make unruly hair smoother and shinier for longer.
NOURISHING FORMULA: It has TECPRO – a new concept in hair technology, with the high performance of physical-chemical characteristics for performing thermal procedures. It has a complex of actives that interacts with the capillary structure, leaving hair smooth, replacing the lost lipid layer, and promoting an intense repair of capillary wear levels.

Searching Plants Brazilian Straight

SALON QUALITY KERATIN WITH PROFESSIONAL RESULTS. Brazilian Straight, Purple Treatment Kit, 1-3 APPLICATIONS, Hair Straightening/Blow Dry/Smoothing/Home Use/Frizz Free

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Why We Love It

Professional salon treatment at home.
Long-lasting, smooth, and straight hair.
Complete, sufficient, user-friendly kit.

Main Highlights

PROFESSIONAL SALON TREATMENT. Our specially formulated keratin treatment penetrates and coats the hair, resulting in straighter, smoother and silkier hair that can be styled with ease.
Straightens/Smooths hair lasting 3 - 6 months.Only use salt & sulphate free shampoo & conditioner aftercare or treatment will be stripped from hair.
Kit contains everything you need to complete at home. This kit is sufficient for approximately 3 treatments of short hair, 2 treatments of medium hair or one treatment of long hair.
Green Top-up kits also available.

VITAMINS hair cosmetics

Vitamins Hair Serum Keratin Treatment - Biotin Collagen & Coconut Oil Hydrating Moisturiser for Frizzy Dry Damaged Hair - Anti Frizz Heat Protection for Curly Wavy Straight Locks

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Why We Love It

Transforms hair to silky smooth.
Revives damaged, color-treated hair.
Protects against heat damage.

Main Highlights

ALLURING SALON LIKE SOFT SHINY HAIR - Keratin Rich Moisturiser with Biotin Collagen Castor & Coconut Oils Blend for Instant Fuller Thicker Hair. Professional Enhancing Treatment for Silky Sleek Smooth Luxury Hair
PROTEIN REPAIR FOR COLOURED DRY DAMAGED HAIR - Ultra Recovery Healing Care & Hydrating Therapy for Colour Treated & Damaged Hair. Revives & Restores Manes from Scalp to Roots. Heals Split Ends
PRO STRENGTHENING & THERMAL HEAT PROTECTION SHIELD - Nourishing Moisture Infusion for Stronger Hair. Anti Breakage Protector & Nutrient Solution Prevents Heat & Flat Iron Damage for Wow Gorgeous Hair
PERFECT FRIZZ CONTROL FOR ALL HAIR TEXTURES - Anti Frizz Curl Defining Detangler Eases Tames & Stops Frizz & Flyaways. Anti Humidity Smoothing Softener for Thin Fine Straight Wavy Curly & Extra Thick Hair
NON GREASY WEIGHTLESS MOISTURISING FORMULA - Volumising Water Based Serum Boosts Bounce. Safe Light Leave In Product for Daily Use. No Alcohol. Paraben Sulfate & Cruelty Free. For Men & Women

KERATIN 10 gum salon LEAVE IN MIRACLE TREATMENT 300ml RSP £19.99

15% Off

Main Highlights

RSP £19.99 MAX

REVLON PROFESSIONAL Uniqone Hair Treatment, Moisturizing Leave-in Hair Treatment, Repair for Damaged Hair, Hair Treatment, Classic Fragrance – 150 ml

7% OffFree Shipping

Why We Love It

Combines 10 haircare benefits.
Effortlessly detangles hair.
Quickly nourishes hair.

Main Highlights

10 BENEFITS IN 1 PRODUCT: Featuring a newly designed bottle, this daily-use leave-in hair treatment combines the 10 different benefits your hair needs into just 1 product
GREAT HAIR IN NO TIME: Whether using the vegan UniqOne hair treatment on wet or dry hair, this leave-in hair treatment takes action quickly so women can do all the precious things they want with their time
EASY DETANGLING: Effortlessly comb through your hair after using the UniqOne detangling hair treatment; The leave-in hair treatment detangles your hair for a knot-free experience
EASY TO USE: Protect your hair easily and quickly by applying the treatment for frizzy hair directly onto wet hair and combing through to detangle. For dry hair, simply apply the conditioning treatment onto the palm of your hand and work the product through your hair
REVLON PROFESSIONAL: Discover our entire range of multi-benefit UNIQONE hair products

VITAMINS hair cosmetics

Vitamins Keratin Leave In Conditioner Moisturiser - Thin to Normal Hair Care Moisturising Hydrating Anti Frizz Detangler Cream for Dry Damaged Curly Hair

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Why We Love It

Intense luxury haircare experience.
Anti-frizz, sleek shiny hair.
Sulfate and cruelty-free.

Main Highlights

KERATIN & ARGAN THIN HAIR LEAVE IN CONDITIONER - No Rinse Conditioning Hair Cream, Intense Luxury Haircare. Dull Hair Restoring & Strengthening Creme to Hydrate & Revitalise for Wow Effect
SMOOTH SILK SOFT HAIR RECONSTRUCTOR - Professional Intensive Keratin Booster. Extra Revitalising Anti Frizz Cream for Sleek, Shiny, Silky & Flawless Healthy Hair Full of Life. Damage Protection Boost for Frizzy Hair
FLYAWAY & FRIZZ CONTROL TREATMENT - Ultra Restore Hair Revitaliser. Pleasant Scented Detangling Therapy for Split Ends Recovery. Restorative Defrizz & Detangle Anti Breakage Solution for Brittle Hair
HAIR NOURISHMENT RICH IN ANTIOXIDANTS - Nourishing & Repairing Protein Hair Moisture. Total Repair for Extremely Damaged, Dry, Colour Treated, Coloured, Bleached, Permed, Black, Blonde, Straight or Curly Hair
GLOSS & SHINE FINE HAIR PROTECTOR - Safe Keratine Enhance Product. No Weigh Down on Hair. Sulfate, Paraben, Alcohol, Salt & Cruelty Free. Strengthens Hair & Adds Hydration, Glaze & Shimmer

Gabri Two Phase Conditioner Spray 400ml, Keratin-Infused Formula, Advanced Repair for Damaged and Weak Hair, Leave-in Conditioner (Keratin)

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Why We Love It

Repairs damaged hair effectively.
Deeply moisturizes and hydrates strands.
Minimizes split ends and breakage.

Main Highlights

Formulated with keratin, a key structural protein that helps repair damaged hair by filling in gaps along the hair shaft, resulting in stronger, healthier, and more resilient strands.
Provides deep moisturization to replenish lost hydration, improving the texture of damaged or chemically treated hair, leaving it soft, smooth, and easy to style.
Reduces the appearance of split ends and minimizes hair breakage by strengthening the hair structure, allowing for healthier hair growth and less frequent trimming.
Protects hair from the damaging effects of heat styling tools, such as flat irons and curling wands, by forming a protective barrier that minimizes moisture loss and thermal damage.
Makes detangling easy, helping to manage frizz and improve overall hair smoothness, resulting in a polished and refined look that lasts throughout the day.

COCOCHOCO Gold 24k Keratin hair Treatment F100ml

8% OffFree Shipping

Why We Love It

Revitalizes and adds shine.
Maintains natural hair texture.
Suitable for all types.

Main Highlights

Nourishes the hair to revitalize and bring shine
Straightens the hair without changing the natural texture
Liquid 24k gold reduces static electricity
Suitable for all hair types

CHI Keratin Mist Leave-In Strengthening Treatment 336g

Why We Love It

Strengthens and softens hair.
Offers thermal and color protection.
Promotes shine and manageability.

Main Highlights

Leave-in strengthening treatment that helps provide hair with strength, protection and softness
Protects the hair from daily use of thermal tools, You can also use Keratin Mist before every Color service
Leave-in strengthening treatment for all hair types
Infuses hair with proteins and evens the porosity of the hair shaft
Low pH, paraben-free, gluten-free, color safe hair lotion
It is a leave-in strengthening spray that contains cationic hydration interlink proteins
The strengthening spray protects the hair and preserves its softness and shine
Strengthens hair
Cationic hydration interlink locks in moisture
Adds shine and provides protection and manageability

CHI Keratin Silk Infusion | Reconstructing Keratin Treatment Hair Serum | Leave-In Hair Oil for Dry Damaged Hair | Hydrates, Restores & Adds Shine | Paraben-Free, Gluten-Free & Color-Safe, 59ml

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Why We Love It

Heals and hydrates damaged hair.
Improves elasticity, prevents breakage.
Promotes long-lasting, healthier hair.

Main Highlights

Leave-in keratin hair treatment reconstructing complex that heals and hydrates dry, damaged hair
This hair oil for frizzy hair improves elasticity and prevents future breakage
Hair moisturiser that adds intense hydration, restoring softness and shine
Keratin hair serum promoting long-lasting, healthier hair, adds shine and elasticity
Paraben-free, gluten-free & color safe hair keratin treatment

8.7

Excellent

We scanned 1921 products

We reviewed these offers relevant to the Keratin Leave In Hair Treatment 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 mutari, Searching Plants Brazilian Straight, VITAMINS hair cosmetics, Keratin 10, REVLON PROFESSIONAL, G Gabri, COCOCHOCO, CHI, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Keratin Leave In Hair Treatment in the market, we considered we took a deep dive into 9606 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 Brazilian Keratin Treatment Blowout Organic Straightening Reductor Reconstructor 1L Mutari Progress | Hair Straightening | | Smoothing System | Volume Reducer | 100% Straight. We love many things about this product by mutari. What sets it apart from the competition is Infused with bamboo extract, Strengthens and smooths hair, Lasts up to 5 months.
The best value product for most shoppers and where user satisfaction is continuously the highest is SALON QUALITY KERATIN WITH PROFESSIONAL RESULTS. Brazilian Straight, Purple Treatment Kit, 1-3 APPLICATIONS, Hair Straightening/Blow Dry/Smoothing/Home Use/Frizz Free by Searching Plants Brazilian Straight based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Keratin Leave In Hair Treatment and the best cost-to-value ratio is KERATIN 10 gum salon LEAVE IN MIRACLE TREATMENT 300ml RSP £19.99at Keratin 10 with a 15% discount.
Our list of the best Keratin Leave In Hair Treatment 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 Keratin Leave In Hair Treatment in The UK

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We scanned 1921 products

We concluded that: