10 Best Hair Smoothing Serum in The UK

Last updated on 08/08/2025

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Best Choice

9.7

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COLOR WOW

COLOR WOW Pop + Lock Frizz Control Serum: Prevent Colour Fade, Seal Split Ends, and Add Gloss - Get Silky, Shiny Hair!

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Why We Love It

Delivers epic shine brilliantly.
Repairs and enhances texture.
Adds spectacular shine inside-out.

Main Highlights

Sparkling high-gloss finish locks down the cuticle and temporarily seals split ends
Protects against UV rays and colour fade
Includes 3 levels of heat protection
Glossing serum instantly smooths frizz on wet or dry hair

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

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Why We Love It

Salon-smooth hair at home.
Fights frizz, boosts shine.
Versatile for all hair types.

Main Highlights

For Smooth, Sleek, Frizz-Free Hair: Created with and used by salon professionals, this smoothing cream tames frizz, flyaways, and static, leaving hair silky, sleek, and effortlessly polished
The Ultimate Frizz Fighter: Formulated with an Anti-Frizz Complex, this lightweight cream blocks humidity and fights frizz, keeping hair under control while delivering a high-gloss, salon-smooth finish
Powered by Shine-Boosting Ingredients: Infused with light reflecting Shine Enhancers, lightweight conditioners and Castor Seed Oil, this formula softens, smooths, and amplifies shine without weighing hair down
With a Soft, Touchable Finish: This multitasking formula delivers smooth, glossy results without leaving hair heavy or oily. Plus, the Enchanting Summer Fruit fragrance will leave your hair smelling so good you’ll be turning heads
Wear It Your Way - Air Dry or Heat Style: Apply to damp hair for effortless styling or dry hair for a sleek, polished finish; Works with air-drying or heat styling for frizz-control and gloss
Salon-Approved for All Hair Types: Designed for straight, wavy, and curly hair, but especially good for frizzy, dull, or coarse textures that need extra smoothness and shine

Goldwell Dualsenses Just Smooth 6 Effects Serum for Unruly Frizzy Hair, Frizz Control, 100ml

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Why We Love It

Provides instant humidity control.
Manages and smoothens hair.
Ideal for daily usage.

Main Highlights

Controls frizz and adds shine to hair
Nourishes and smooths for a sleek finish
Protects against heat and environmental damage
Strengthens hair for a healthy, manageable look
Ideal for all hair types, especially frizzy hair

Goldwell StyleSign Smoothing Serum Spray, Hair Serum for Frizz Control and Heat Protection, 100ml

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Why We Love It

Instant heat protection guaranteed.
Achieve silky-straight hair effortlessly.
Reduces hair breakage significantly.

Main Highlights

Value for money
Good product with excellent quality
Easy to use

Wella Professionals Oil Reflections Luminous Smoothening Hair Oil - Radiant Shine & Silky Smoothness Hair With Camellia Oil & White Tea Extract 100ml

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Why We Love It

Ideal for professional hair care.
Effortless application process.
Priced for everyday use.

Main Highlights

HAIR OIL: Unlocks your luminosity from root-to-tip - achieve radiant shine & smoothness with this nourishing hair oil
SMOOTHENING: Enriched with Camellia Oil & White Tea Extract for long-lasting hydrated feeling & luminous shine
PROTECTION: With Metal Purifier to protect from harmful metals in water & prevent damage to your hair
MOISTURISING FEEL: Helps to replenish moisture balance - keeps hair looking & feeling healthy & strong
HAIR CARE: Hair appears visibly smoother with a luminous shine - the perfect hair care gift

Matrix Biolage Smoothproof Avocado Deep Smoothing Serum Smoothes and Controls Frizzy hair - 100ml

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Main Highlights

Biolage Smoothproof Deep Smoothing 6-In-1 Professional Hair Serum

Bed Head by TIGI - Straighten Out Anti Frizz Hair Serum - For Smooth Shiny Hair - 100 ml

55% OffFree Shipping

Why We Love It

Tames and smoothens frizzy hair.
Ensures glossy, shiny finish.
Offers efficient heat protection.

Main Highlights

Bed head's new straighten out serum with a frizz-free formulation
new on the outside and just as epic on the inside
Lightweight, anti-frizz serum helps fight frizz and smooth flyaway
Moisturises hair for a glossy and shiny finish
With heat protection
Great for smoothing unruly and frizzy hair

L'Oréal Paris Elvive Extraordinary Oil Miracle Hair Serum, Intense Nourishment, Up to 6x more Shine, up to 230° heat protection, suitable for all hair types, 100ml

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Why We Love It

Transforms dry, dull hair.
Provides luxurious shine.
Offers heat protection.

Main Highlights

Leaves your hair feeling beautifully nourished, soft and supple, Weightless finishing touch designed for use by all hair types
How to use: Rub 3 or 4 drops on hair, Apply evenly through wet or dry hair, Apply before shampoo to nourish, before styling to protect and transform, or as a finishing touch for sumptuous softness
Non greasy formula made with luxurious oils: 6 flower oil extracts with nourishing properties for luxurious shine & no flyaways, Heat protection from up to 230°C protection

John Frieda Frizz Ease Weightless Wonder Featherlight Smoothing Creme for Frizzy, Fine Hair with Aloe Water, Frizz Control for Thin, Fine Hair, 100 ml

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Why We Love It

Featherlight control without the frizz.
Works on wet or dry hair.
Perfect hydration for fine hair.

Main Highlights

Instant featherlight frizz control and smoothness
For use on wet or dry hair
Smoothing hydration for fine, thin hair
Vegan-friendly

Bed Head by TIGI - Control Freak Anti Frizz Hair Serum - For Smooth Shiny Hair - 255 ml

16% OffFree Shipping

Why We Love It

Tames unruly, frizzy locks seamlessly.
Imparts luxurious shine with mica.
Delivers intense hydration for softness.

Main Highlights

Anti-frizz hair serum
With mica for incredibly glossy and shiny hair
Smooths frizz, flyaways and static
Moisturises and conditions hair for a smooth, soft look
Bed Head by Tigi Control Freak Serum is great curly hair, frizzy hair and coarse hair

9.0

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We scanned 1595 products

We reviewed these offers relevant to the Hair Smoothing Serum 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 COLOR WOW, TIGI, Goldwell, Wella Professionals, Biolage, L'Oreal Paris, John Frieda, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Hair Smoothing Serum in the market, we considered we took a deep dive into 7976 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 COLOR WOW Pop + Lock Frizz Control Serum: Prevent Colour Fade, Seal Split Ends, and Add Gloss - Get Silky, Shiny Hair!. We love many things about this product by COLOR WOW. What sets it apart from the competition is Delivers epic shine brilliantly, Repairs and enhances texture, Adds spectacular shine inside-out.
The best value product for most shoppers and where user satisfaction is continuously the highest is Bed Head by TIGI After Party Super Smoothing Cream – Anti Frizz hair styling product with humidity protection for frizzy, dull or coarse hair, 100ml by TIGI based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Hair Smoothing Serum and the best cost-to-value ratio is Bed Head by TIGI - Straighten Out Anti Frizz Hair Serum - For Smooth Shiny Hair - 100 mlat TIGI with a 55% discount.
Our list of the best Hair Smoothing Serum 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 Hair Smoothing Serum in The UK

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John Frieda Frizz Ease Secret Agent Touch Up Crème, 100 ml, Smoothing Cream for Frizzy, Curly Hair

Cureskin Smooth and Shine Hair Serum for Dry Frizzy Hair Women and Men | Helps Reducing Hair Breakage, Frizz and Detangels for Strong, Protected and Shiny Hair

Aussie Super Serum Leave In Conditioner Hair Serum Treatment, For Dry, Damaged Hair. 100 Hours of Hydration, Smooth, Soften, Detangle, Prevent Split Ends and Boost Shine, 160ml

Avon Advance Techniques Absolute Nourishment Argan Hair Serum 30ml, Multi-Tasking Hair Treatment, Formulated with Argan Oil, Restores Shine and Health to Damaged Hair, Cruelty Free

We scanned 1595 products

We concluded that: