10 Best Mouthwash in The UK

Last updated on 08/08/2025

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Colgate Plax Mouthwash, Cool Mint Mouthwash with 24/7* Plaque Protection, Alcohol Free Mouthwash** with Fluoride, Vegan Mouthwash, Multipack, 4 Pack, 500ml Bottles

27% OffFree Shipping

Why We Love It

Provides 24/7 plaque protection.
Enjoy cool, lasting freshness.
No alcohol, burning sensation.

Main Highlights

WHAT YOU'LL GET: Includes four (4) 500ml Colgate Plax Cool Mint Mouthwash bottles featuring a vegan formula without any alcohol**
COLGATE MINT MOUTHWASH: Fight bad breath and feel fresh and protected with 24/7* plaque protection when you use this specially designed Colgate mouthwash
ALCOHOL FREE MOUTHWASH: Colgate Plax is a vegan, fluoride mouthwash that contains 0% alcohol** for complete freshness without the burning sensation
FRESHER BREATH: Enjoy a cool mint flavour with a new cooling sensation powered by FreshFX technology for long-lasting freshness
UK'S TOP BRAND: Colgate is the number one dentist-recommended brand*** for toothpaste when it comes to dental health
*Plaque bacteria, when used twice daily **No ethyl alcohol ***Colgate Brand, Toothpaste, UK, Dentist Surgery 2021

The Breath Co. Alcohol Free Mouthwash. Dentist Formulated Oral Rinse for 12 Hours of Fresh Breath, Icy Mint Flavour, 500 ml

33% OffFree Shipping

Why We Love It

Provides 12 hours fresh breath.
Formula neutralizes bad breath.
Ideal for sensitive mouths.

Main Highlights

12 Hours of Fresh Breath: The Breath Co Fresh Breath Oral Rinse fights bad breath for 12 hours with our unique pH balanced formula, giving you long-lasting confidence with every use
Powered by Active Oxygen: Our unique formula powered by active oxygen is clinically shown to neutralise bad breath and cleans the whole mouth, even in hard-to-reach places
Dentist Formulated: Created by Dr. Harold Katz to help his daughter overcome her chronic bad breath, our mouthwash is made from his breakthrough research into fighting odour-causing mouth bacteria
PH Balanced: Our unique formula is pH-balanced, unlike other acid-based mouthwashes, and helps to resist daily acidic attacks that can harm your teeth enamel and gums
Alcohol Free: Our non-burning mouthwash is free from alcohol that can irritate and dehydrate the mouth, which when dehydrated can increase odour causing bacteria
Clean Label: Our mouthwash is made to the highest standards with no artificial dyes or saccharin, and is suitable for kosher, halal, gluten free, vegetarian, and vegan diets

Listerine Total Care Antibacterial Mouthwash (1000ml), Caring and Cleansing Mouthwash with 10-in-1 Benefits, Clean Mint-Flavoured Mouthwash to Freshen Breath

30% OffFree Shipping

Why We Love It

Kills bacteria, freshens breath.
Strengthens, protects teeth.
Superior plaque reduction.

Main Highlights

Listerine is the 1# mouthwash brand in the UK & Ireland*. This product is designed to kill up to 99% of bacteria that cause plaque and bad breath left after brushing for 12-hour germ protection and up to 24-hour fresh breath protection when used twice daily
This fluoride mouthwash is designed to remineralise enamel, strengthen teeth, and offer gum protection, while zinc chloride acts to help prevent tartar — teeth are protected from cavities and decay
Proven to be 5x more effective than floss at reducing plaque** (**Germ kills provides sustained plaque reduction above the gumline after a dental cleaning. Use alongside brushing and flossing)
How to use: Pour 20ml (4 x 5ml teaspoonfuls) of Listerine mouthwash into a glass, rinse around teeth and gums for 30 seconds, then spit out. Especially effective when used morning and evening after brushing
Product details: Listerine Total Care Antibacterial Mouthwash (1000ml), helps to reduce plaque, freshen breath, help prevent tartar build-up, and keep teeth naturally white, while helping strengthen teeth with fluoride

Corsodyl Mouthwash Gum Disease Treatment for Adults, Chlorhexidine Mouthwash for Gingivitis Treatment, Alcohol Free, Mint 300ml

40% OffFree Shipping

Why We Love It

Effective gum disease treatment.
Promotes dental healing quickly.
Reduces gum inflammation fast.

Main Highlights

Corsodyl mint mouthwash is a medicine containing chlorhexidine digluconate for the treatment of early signs of gum disease; always read the label
For the treatment of gum problems - bleeding gums, irritated gums and mouth ulcers
Kills the main cause of gum disease (gingivitis) in 30 seconds (1)
Promotes healing after dental surgery or treatment
Intensive care to help stop bleeding gums, swollen and inflamed gums

Prevents gum disease & Bleeding Gum Treatment, Antibacterial Mouthwash, Original Alcohol Free, 300 ml

3% OffFree Shipping

Why We Love It

Kills gum disease quickly.
Promotes good oral hygiene.
Effective gingivitis treatment.

Main Highlights

Corsodyl Original Alcohol Free Mouthwash is a medicine containing chlorhexidine digluconate to treat the early signs of gum disease
This medicated mouthwash is an effective gingivitis treatment, killing the main cause of gum disease in just 30 seconds*
Promotes good oral hygiene and healing after dental surgery or treatment, can be used as an aid to manage denture sore mouth, oral thrush or recurring mouth ulcers, and stops bleeding, swollen, and inflamed gums
This anti-bacterial mouthwash in 300ml comes in aniseed flavour
A short-term intensive treatment, pour 10ml of Corsodyl Mouthwash, rinse for 1 minute, and then spit it out. Use twice daily.
Corsodyl Original Mouthwash contains chlorhexidine digluconate. For the treatment of gingivitis. Always read the label.

Dentyl Dual Action Smooth Mint Plaque-Reducing CPC Mouthwash, 500ml

Free Shipping

Why We Love It

Removes plaque and bacteria.
Effective after brushing.
Keeps mouths healthy.

Main Highlights

Physically lifts and removes plaque and bacteria from the mouth
Removes what brushing leaves behind – the only mouthwash that shows the results in the sink
Contains the powerful antimicrobial agent Cetylpyridinium Chloride (CPC), which helps keep mouths healthy
Contains fluoride
Alcohol free

Colgate Plax Cool Mint Alcohol Free* Mouthwash 1L - Mouthwash Alcohol Free* - Instant Long-Lasting Freshness - No Burn Experience - 24/7 Plaque Protection When Used Twice Daily

Free Shipping

Why We Love It

Experience long-lasting freshness instantly.
Enjoy a refreshing swish.
Clinically tested by dentists.

Main Highlights

SUPER FRESH: Experience instant, long-lasting freshness with Colgate Plax Cool Mint alcohol free* Mouthwash!
NO BURN SENSATION: Because this no alcohol* mouthwash is designed for a no burn sensation with 0% alcohol*, you’ll love the swishing that gives you 100% breathtaking freshness
PLAQUE PROTECTION: Colgate Plax provides 24/7** plaque protection, so you know you’re doing a great job looking after your teeth each time you rinse
CLINICALLY TESTED: The alcohol free mouthwash has been clinically tested by dentists
DISCLAIMERS: *Contains no ethyl alcohol. **Plaque bacteria, when used twice daily
Vegan

Listerine Advanced Defence Gum Treatment Mouthwash (500ml), Clinically Proven to Treat Gum Disease as in Little as Two Weeks, Repels Plaque Germs to Treat and Prevent Gingivitis from Recurring

33% OffFree Shipping

Why We Love It

Proven to treat gum disease.
Prevents plaque and gingivitis.
Promotes healthier gum state.

Main Highlights

Listerine is the 1# mouthwash brand in the UK & Ireland*. Listerine Advanced Defence Gum Treatment Mouthwash is clinically proven to treat gum disease and prevent it from recurring
To treat gingivitis: Bleeding gums can be a sign of gingivitis, an inflammation of the gums caused by plaque bacteria sticking to your gums
Invisible protective shield: The oral dental care rinse prevents plaque germs from attaching to the gums, allowing gums to repair and restore themselves to a natural healthier state
How to use: Use the Listerine mouthwash twice daily, morning and evening after brushing. Pour 20ml (4 x 5ml teaspoons) into a glass, rinse for 30 seconds, then spit out
Product details: Listerine Advanced Defence Gum Treatment Mouthwash (500ml), clinically proven to treat and prevent gum disease and gingivitis, caring mouthwash for defending gums

Colgate Peroxyl Antiseptic Mint Flavour 300ml Mouthwash, Relieves Minor Mouth and Gum Irritations, (Pack of 1)

7% OffFree Shipping

Why We Love It

Unique oxygenating cleansing action.
Relieves minor gum irritations.
Clinically proven gum care.

Main Highlights

Unique Oxigenating cleansing action kills bacteria, prevents germs from spreading and flushes out debris & plaque
Relieves minor mouth and Gum irritations
Antibacterial effect on anaerobic bacteria
Clinically proven to reduce gum inflammation*
1.5% Hydrogen Peroxyde alcohol free mouthwash

Listerine Total Care Milder Taste (Zero Alcohol) Antibacterial Mouthwash (500ml), Caring and Cleansing Mouthwash to Freshen Breath with 10-in-1 Benefits

46% OffFree Shipping

Why We Love It

Kills 99% of bacteria.
Alcohol-free for sensitive mouths.
Strengthens teeth with fluoride.

Main Highlights

Listerine is the 1# mouthwash brand in the UK & Ireland*. This alochol free product is designed to kill up to 99% of bacteria that cause plaque and bad breath left after brushing for 12-hour germ protection and up to 24 hour fresh breath protection when used twice daily
This fluoride mouthwash is designed to remineralise enamel, strengthen teeth, and offer gum protection, while zinc chloride acts to help prevent tartar — teeth are protected from cavities and decay
Proven to be 5x more effective than floss at reducing plaque** (**Germ kills provides sustained plaque reduction above the gumline after a dental cleaning. Use alongside brushing and flossing)
How to use: Pour 20ml (4 x 5ml teaspoonfuls) of Listerine mouthwash into a glass, rinse around teeth and gums for 30 seconds, then spit out. Especially effective when used morning and evening after brushing
Product details: Listerine Total Care Milder Taste (Zero Alcohol) Antibacterial Mouthwash (500ml), helps to reduce plaque, freshen breath, help prevent tartar build-up, and keep teeth naturally white, while helping strengthen teeth with fluoride

8.8

Excellent

Save 46%

We scanned 528 products

We reviewed these offers relevant to the Mouthwash 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 Colgate, The Breath Co., Listerine, Corsodyl, Dentyl, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Mouthwash in the market, we considered we took a deep dive into 2641 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 Colgate Plax Mouthwash, Cool Mint Mouthwash with 24/7* Plaque Protection, Alcohol Free Mouthwash** with Fluoride, Vegan Mouthwash, Multipack, 4 Pack, 500ml Bottles. We love many things about this product by Colgate. What sets it apart from the competition is Provides 24/7 plaque protection. , Enjoy cool, lasting freshness. , No alcohol, burning sensation.
The best value product for most shoppers and where user satisfaction is continuously the highest is The Breath Co. Alcohol Free Mouthwash. Dentist Formulated Oral Rinse for 12 Hours of Fresh Breath, Icy Mint Flavour, 500 ml by The Breath Co. based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Mouthwash and the best cost-to-value ratio is Listerine Total Care Milder Taste (Zero Alcohol) Antibacterial Mouthwash (500ml), Caring and Cleansing Mouthwash to Freshen Breath with 10-in-1 Benefitsat Listerine with a 46% discount.
Our list of the best Mouthwash 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 Mouthwash in The UK

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We scanned 528 products

We concluded that: