10 Best Hair Smoothing Serum in The UK

Last updated on 28/08/2025
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Best Choice
1
9.7
Exceptional
Save 15%
Moroccanoil Intense Smoothing Frizz Control Serum, 50ml
Moroccanoil
Moroccanoil Intense Smoothing Frizz Control Serum, 50ml
15% OffFree Shipping
Why We Love It
  • Versatile for damp or dry hair.
  • Enhances shine, reduces frizz.
  • Convenient 50ml single pack.
Main Highlights
  • Distribute on damp hair from mid-length to ends, then style. Use on dry hair for added shine and frizz reduction.
9.7
Exceptional
Save 15%
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Best Value
2
9.6
Superb
Save 20%
COLOR WOW Pop + Lock Frizz Control Serum: Prevent Colour Fade, Seal Split Ends, and Add Gloss - Get Silky, Shiny Hair!
COLOR WOW
COLOR WOW Pop + Lock Frizz Control Serum: Prevent Colour Fade, Seal Split Ends, and Add Gloss - Get Silky, Shiny Hair!
20% OffFree Shipping
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
9.6
Superb
Save 20%
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3
9.4
Superb
Goldwell StyleSign Smoothing Serum Spray, Hair Serum for Frizz Control and Heat Protection, 100ml
Goldwell
Goldwell StyleSign Smoothing Serum Spray, Hair Serum for Frizz Control and Heat Protection, 100ml
Free Shipping
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
9.4
Superb
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4
9.3
Superb
Save 18%
Goldwell Dualsenses Just Smooth 6 Effects Serum for Unruly Frizzy Hair, Frizz Control, 100ml
Goldwell
Goldwell Dualsenses Just Smooth 6 Effects Serum for Unruly Frizzy Hair, Frizz Control, 100ml
18% OffFree Shipping
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
9.3
Superb
Save 18%
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5
9.3
Superb
Moroccanoil Smoothing Lotion
Moroccanoil
Moroccanoil Smoothing Lotion
Free Shipping
Why We Love It
  • Provides medium hold definition.
  • Enriched with Argan oil.
  • Leaves hair smooth.
Main Highlights
  • Sorgt für Definition und bietet Mittelstarken halt
  • Mit Arganöl, Arganbutter, Vitamin E und essenziellen Fettsäuren
  • Leichte Föhnlotion, die für geschmeidiges und Frisierbares haar sorgt
  • Haartype: Normal
9.3
Superb
Amazon Logo
6
9.3
Superb
Save 50%
Bed Head by TIGI After Party Super Smoothing Cream – Anti Frizz hair styling product with humidity protection for frizzy, dull or coarse hair, 100ml​
TIGI
Bed Head by TIGI After Party Super Smoothing Cream – Anti Frizz hair styling product with humidity protection for frizzy, dull or coarse hair, 100ml​
50% OffFree Shipping
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
9.3
Superb
Save 50%
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7
9.2
Superb
Save 12%
Matrix Biolage Smoothproof Avocado Deep Smoothing Serum Smoothes and Controls Frizzy hair - 100ml
Biolage
Matrix Biolage Smoothproof Avocado Deep Smoothing Serum Smoothes and Controls Frizzy hair - 100ml
12% Off
Main Highlights
  • Biolage Smoothproof Deep Smoothing 6-In-1 Professional Hair Serum
9.2
Superb
Save 12%
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8
9.1
Superb
L'Oréal Paris Elvive Dream Lengths, Frizz Serum, White, 100 ml (Pack of 1)
L'Oreal Paris
L'Oréal Paris Elvive Dream Lengths, Frizz Serum, White, 100 ml (Pack of 1)
Free Shipping
Why We Love It
  • All-day anti-frizz control.
  • Heat protection up to 230°C.
  • Lightweight, non-greasy formula.
Main Highlights
  • Frizz killer serum leave-in for long, frizzy hair
  • Enriched with vegetal keratin & Cocoa butter
  • Up to 230°C heat protection - instrumental test, protecting from heat tools up to 230°C
  • All day anti-frizz. Slays static
  • Non greasy, lightweight formula
  • Silicone-free for a natural feel
9.1
Superb
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9
9.1
Superb
Save 58%
Bed Head by TIGI - Straighten Out Anti Frizz Hair Serum - For Smooth Shiny Hair - 100 ml
TIGI
Bed Head by TIGI - Straighten Out Anti Frizz Hair Serum - For Smooth Shiny Hair - 100 ml
58% 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
9.1
Superb
Save 58%
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10
9.0
Superb
Save 50%
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
L'Oreal Paris
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
50% OffFree Shipping
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
9.0
Superb
Save 50%
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We scanned 336 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 Moroccanoil, COLOR WOW, Goldwell, TIGI, Biolage, L'Oreal Paris, 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 1681 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: