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Colgate Plax Soft Mint Green (500ml)

Colgate Plax Soft Mint Green (500ml)

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  • ✔️ Reduces plaque build-up with cetylpyridinium chloride
  • ✔️ Alcohol-free formula gentle on sensitive oral tissues
  • ✔️ Freshens breath by neutralising odour-causing bacteria
  • ✔️ Suitable for adults and children aged six and over
  • ✔️ 500ml bottle provides weeks of daily oral protection

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What Is Colgate Plax Mouthwash and How Does It Help?

 

Good oral hygiene goes beyond brushing alone. Rinsing with a daily mouthwash helps reach areas of the mouth that a toothbrush simply cannot. Colgate Plax mouthwash in Soft Mint Green is a 500ml alcohol-free daily oral rinse designed to reduce plaque, fight bacteria, and leave your breath feeling genuinely fresh. At just £4.99, it offers accessible everyday oral care without the harshness of alcohol-based alternatives. You can browse the full range of products in our oral health collection if you are looking for complementary dental care items.

The NHS recommends brushing teeth twice daily and using interdental cleaning aids, but a mouthwash can add an extra layer of protection against plaque and gum disease. Colgate Plax is one of the most widely recognised daily rinses available in the UK, and its gentle, alcohol-free formula makes it suitable for regular use by most adults and children aged 6 and over.

 

How Does Colgate Plax Soft Mint Work to Protect Your Mouth?

 

The active ingredient in Colgate Plax is cetylpyridinium chloride (CPC), a quaternary ammonium antiseptic compound. CPC works by disrupting the cell membranes of bacteria present in the oral cavity, reducing their ability to colonise tooth surfaces and form plaque biofilm. Here is how the rinse works step by step:

  • CPC penetrates bacterial cell walls and disrupts membrane integrity
  • Bacterial activity is reduced, limiting plaque formation on tooth enamel
  • The rinse reaches interdental spaces and along the gumline where brushing misses
  • The soft mint flavour neutralises volatile sulphur compounds responsible for bad breath
  • The alcohol-free base minimises drying of oral mucosa, making it comfortable for daily use

Because it is alcohol-free, it does not cause the burning sensation associated with some other rinses, which is particularly helpful if you have sensitive gums or a dry mouth.

 

Who Is Colgate Plax Soft Mint Suitable For?

 

This mouthwash is designed for adults and children aged 6 years and over who want to maintain good daily oral hygiene. It is particularly well suited to people who:

  • Want an alcohol-free mouthwash for daily use
  • Are prone to plaque build-up between dental appointments
  • Experience mild bad breath and want a reliable daily solution
  • Prefer a gentle rinse that does not irritate sensitive oral tissues

It is not intended to replace professional dental treatment for gum disease or tooth decay. If you have an existing oral health condition, speak to your dentist before adding any new rinse to your routine. You may also find it useful to explore our dental products collection for toothpastes and other oral care essentials.

 

How Does Colgate Plax Compare to Other Daily Mouthwashes?

 

Feature Colgate Plax Soft Mint 500ml Typical Alcohol-Based Mouthwash
Contains alcohol No Yes (often 20–26%)
Active ingredient Cetylpyridinium chloride Varies (e.g. chlorhexidine, ethanol)
Suitable for daily use Yes Depends on formulation
Suitable for ages 6+ Yes (with supervision) Often 12+ due to alcohol content

 

Is Colgate Plax Mouthwash Safe to Store at Home?

 

Yes. Store Colgate Plax mouthwash below 25°C, away from direct sunlight and out of reach of children. The 500ml bottle is designed for household use and should be kept tightly capped when not in use. Do not use after the expiry date printed on the bottle. As with all oral care products, keep it away from young children to prevent accidental ingestion — swallowing large amounts of any mouthwash is not safe.

Colgate Plax mouthwash is an over-the-counter product and does not require a prescription. However, if you are managing a specific oral health condition or taking medicines that affect your mouth, it is worth checking with your pharmacist first.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Colgate Plax Soft Mint Green 500ml specifications
Treatment category Oral hygiene / Plaque control
Mechanism of action Cetylpyridinium chloride disrupts bacterial cell membranes to reduce plaque
Effective for Plaque reduction, bad breath, daily oral hygiene
Suitable for Adults and children aged 6 years and over
Active ingredient Cetylpyridinium chloride
Pack size 500ml
UK classification General Sale (GSL)
Preparation Oral rinse solution
Route of administration Oral (rinse and spit)

Specifications of Colgate Plax Soft Mint Green 500ml

 

What Is Colgate Plax Soft Mint Green and What Is It Used For?

 

Colgate Plax Soft Mint Green is an over-the-counter, alcohol-free oral rinse used as part of a daily oral hygiene routine. It is used to help reduce plaque build-up on teeth, freshen breath, and support gum health when used alongside regular brushing and flossing. The NHS advises that good oral hygiene — including brushing twice daily with fluoride toothpaste — is the foundation of dental health, and a daily mouthwash can complement this routine. Colgate Plax is not a treatment for dental disease and does not replace professional dental care.

 

What Do You Need to Know Before Using Colgate Plax Mouthwash?

 

Before using this product, read the following carefully. Although Colgate Plax is a general sale product, there are some important considerations.

Do not use this product if:

  • You are allergic to cetylpyridinium chloride or any other listed ingredient
  • The child using it is under 6 years of age
  • You have open sores or ulcers in your mouth that have not been assessed by a dentist or GP

Take care and speak to your pharmacist if:

  • You have a known dry mouth condition (xerostomia)
  • You are pregnant or breastfeeding — while no specific risk is established, it is sensible to seek advice
  • You have recently had oral surgery or dental procedures
  • You are using other prescribed oral rinses such as chlorhexidine — do not use simultaneously without dental advice

Known interactions:

  • Chlorhexidine mouthwash — using both at the same time may reduce the effectiveness of each; space them apart or seek dental guidance
  • No significant systemic drug interactions are known for topical oral use at recommended doses

 

How Should You Use Colgate Plax Soft Mint Mouthwash?

 

Using Colgate Plax correctly ensures you get the most benefit from each rinse. Follow these steps each time:

  1. Measure 10ml of mouthwash using the cap provided
  2. Pour into your mouth — do not dilute with water
  3. Rinse vigorously around your mouth and between your teeth for 30 seconds
  4. Spit out completely — do not swallow
  5. Do not eat, drink, or rinse your mouth with water for at least 30 minutes after use

For best results, use after brushing your teeth. The NHS recommends not rinsing with water immediately after brushing, as this washes away the fluoride from your toothpaste — the same principle applies here.

Indication Age Group Dose Frequency
Daily plaque control and fresh breath Adults and children 6+ 10ml Once or twice daily
Children aged 6–12 6–12 years 10ml Once daily under adult supervision
Children under 6 Under 6 years Not recommended

If you are looking for additional support for your overall health alongside your oral care routine, our vitamins and supplements collection includes products that support immune health and general wellbeing.

 

What Are the Possible Side Effects of Colgate Plax Mouthwash?

 

Colgate Plax is generally well tolerated. Side effects are uncommon when used as directed. However, as with any oral care product, some people may notice the following.

Common side effects:

  • Mild tingling or slight oral irritation, particularly on first use
  • Temporary altered taste sensation immediately after rinsing

Less common side effects:

  • Tooth or tongue staining with prolonged or excessive use — this is reversible with professional cleaning
  • Dry mouth sensation in some individuals
  • Allergic reactions (rare) — signs include swelling of the mouth, lips, or throat; stop use immediately and seek medical attention if this occurs

If you experience persistent irritation or any unexpected symptoms, stop using the product and speak to your pharmacist or dentist. Do not ignore signs of an allergic reaction.

 

How Should You Store Colgate Plax Mouthwash?

 

Correct storage keeps the product effective and safe throughout its shelf life. Follow these guidelines:

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Always replace the cap tightly after use
  • Keep out of reach and sight of children
  • Do not use after the expiry date printed on the bottle
  • Do not store in the bathroom if it is frequently steamy — a bedroom or kitchen cupboard is preferable

If you are managing multiple health products at home, our first aid collection has a range of essentials to keep your household health kit well stocked.

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Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Colgate Plax mouthwash online in the UK?

You can buy Colgate Plax Soft Mint Green 500ml directly from Cured Pharmacy online for £4.99 with fast UK delivery. It is a general sale product and does not require a prescription. Simply add it to your basket and check out — no consultation needed.

How does Colgate Plax mouthwash work in the mouth?

Colgate Plax contains cetylpyridinium chloride (CPC), an antiseptic that disrupts the cell membranes of bacteria in the mouth, reducing their ability to form plaque on tooth surfaces. It also neutralises the volatile sulphur compounds that cause bad breath. The alcohol-free formula means it does this without drying out your oral tissues.

How do I use Colgate Plax Soft Mint step by step?

Measure 10ml using the cap, swirl it vigorously around your mouth for 30 seconds, then spit it out completely. Do not swallow and do not rinse with water afterwards, as this reduces the product's effectiveness. Use once or twice daily, ideally after brushing your teeth.

What is the best time to use Colgate Plax mouthwash?

The best time to use Colgate Plax is after brushing your teeth, either in the morning or before bed. Using it at a separate time to brushing — rather than immediately after — can help extend the protective effect in your mouth. Avoid eating or drinking for at least 30 minutes after rinsing.

Is Colgate Plax mouthwash safe to use every day?

Yes, Colgate Plax is specifically formulated for daily use. Its alcohol-free formula makes it gentler on oral tissues than many other rinses, so it is suitable for ongoing daily use as part of your regular oral hygiene routine. If you notice any persistent irritation, speak to your pharmacist or dentist.

Is Colgate Plax mouthwash suitable for children?

Colgate Plax is suitable for children aged 6 years and over, but must be used under adult supervision to prevent accidental swallowing. It is not recommended for children under 6. If you are looking for age-appropriate oral care for younger children, visit our baby and toddler collection for suitable alternatives.

Does Colgate Plax mouthwash contain alcohol?

No, Colgate Plax Soft Mint Green is alcohol-free. This makes it a good choice for people who prefer to avoid alcohol in oral care products, including those with certain religious considerations, people in recovery from alcohol dependency, or anyone who finds alcohol-based rinses too harsh or drying.

What are the side effects of Colgate Plax mouthwash?

Side effects are uncommon but can include mild oral irritation, a temporary change in taste, or tooth staining with prolonged excessive use. Staining from cetylpyridinium chloride is reversible with professional dental cleaning. Rarely, allergic reactions may occur — if you notice swelling of the mouth or throat, stop use immediately and seek medical attention.

Can I use Colgate Plax mouthwash if I am pregnant?

There is no specific evidence that Colgate Plax is harmful during pregnancy, but as with any product used during pregnancy, it is sensible to check with your midwife, GP, or pharmacist before starting. Good oral hygiene is particularly important during pregnancy, as hormonal changes can increase the risk of gum disease.

How long can you use Colgate Plax mouthwash for?

Colgate Plax can be used as part of your long-term daily oral hygiene routine without a set time limit. Unlike chlorhexidine-based rinses, which are typically recommended for short-term use only, CPC-based rinses like Colgate Plax are considered suitable for ongoing daily use. If you develop any new oral symptoms, consult your dentist.

What happens if I accidentally swallow Colgate Plax mouthwash?

Swallowing a small amount accidentally is unlikely to cause serious harm in adults, but the product is not intended to be ingested. If a child swallows a significant amount, contact NHS 111 or your nearest A&E immediately. Always keep the bottle out of reach of children to prevent accidental ingestion.

Can I use Colgate Plax at the same time as chlorhexidine mouthwash?

It is not advisable to use Colgate Plax and chlorhexidine mouthwash at the same time, as they may interact and reduce each other's effectiveness. If your dentist has prescribed chlorhexidine, ask them whether it is appropriate to continue using Colgate Plax alongside it, or whether you should pause one of them.

What are the alternatives to Colgate Plax mouthwash?

Alternatives include other CPC-based rinses, fluoride mouthwashes for cavity prevention, or chlorhexidine rinses for short-term gum disease management. The right choice depends on your specific oral health needs — your dentist or pharmacist can advise. You can explore a wider range of options in our oral health collection.

Does Colgate Plax mouthwash help with gum disease?

Colgate Plax can help reduce plaque, which is a key contributing factor to gum disease (gingivitis). However, it is not a treatment for established gum disease. The NHS recommends that anyone with signs of gum disease — such as bleeding gums, swelling, or persistent bad breath — should see a dentist for a proper assessment and treatment plan.

What are the latest findings on cetylpyridinium chloride mouthwashes?

Research continues to support the use of cetylpyridinium chloride as an effective antiseptic agent for reducing oral bacteria and plaque when used as part of a daily oral hygiene routine. Some studies have also explored its potential role in reducing oral viral load, though this remains an area of ongoing research. For everyday plaque control and fresh breath, CPC-based rinses like Colgate Plax remain a well-established option.

How Should You Use Colgate Plax Soft Mint Mouthwash?

Using Colgate Plax correctly is straightforward, but a few simple steps make a real difference to how effective it is. Always use it after brushing your teeth rather than before, so you are not washing away the fluoride from your toothpaste. Follow these steps each time you rinse:

Children aged 6 to 12 should always be supervised by an adult during use to ensure they spit the product out and do not swallow it.

What Is the Correct Dose of Colgate Plax Mouthwash?

The recommended dose for adults and children aged 6 and over is 10ml per use, measured using the cap. Do not use more than this — using a larger volume does not increase the benefit and may increase the risk of accidental swallowing. The table below summarises dosing by age group and indication.

When Is the Best Time to Use Colgate Plax Mouthwash?

The most effective time to use Colgate Plax is after brushing your teeth — either in the morning after breakfast or at night before bed. Using it at bedtime is particularly beneficial, as saliva flow decreases during sleep, which can allow bacteria to multiply more freely. Rinsing before bed helps reduce bacterial activity overnight. Avoid eating, drinking, or rinsing with water for at least 30 minutes after use to allow the active ingredient to work fully.

How Long Can You Use Colgate Plax Mouthwash For?

Unlike some medicated rinses such as chlorhexidine, which are typically recommended for short courses of up to four weeks, Colgate Plax is suitable for long-term daily use as part of your ongoing oral hygiene routine. There is no set maximum duration. However, if you notice any persistent changes in your mouth — such as staining, irritation, or new symptoms — speak to your dentist or pharmacist. Regular dental check-ups remain important regardless of how consistently you use a daily mouthwash.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Colgate Plax Mouthwash?

Colgate Plax is well tolerated by most people when used as directed. Common side effects are generally mild and tend to resolve on their own without any need to stop using the product. They are more likely to occur when you first start using the rinse.

  • Mild tingling or slight burning sensation in the mouth, particularly on first use
  • Temporary altered or reduced taste sensation immediately after rinsing
  • Mild dry mouth feeling in some individuals

What Are the Less Common Side Effects of Colgate Plax Mouthwash?

Less common side effects are not experienced by most users but are worth being aware of, particularly if you use the product more frequently than recommended or for extended periods without dental review.

  • Tooth or tongue staining — this can occur with prolonged or excessive use of cetylpyridinium chloride-containing products and is reversible with professional dental cleaning
  • Increased sensitivity of the oral mucosa (the lining of the mouth)
  • Mild gum irritation, particularly if you have existing gum sensitivity

What Are the Serious Side Effects of Colgate Plax Mouthwash?

Serious side effects are rare but require prompt attention. Allergic reactions to any ingredient in Colgate Plax, including cetylpyridinium chloride, are uncommon but possible. If you experience any of the following, stop using the product immediately and seek urgent medical advice:

  • Swelling of the lips, tongue, mouth, or throat
  • Difficulty breathing or swallowing
  • Severe rash or hives affecting the face or body
  • Sudden worsening of mouth pain or ulceration

What Should You Do If You Experience Side Effects of Colgate Plax?

For mild side effects such as tingling or taste changes, no action is usually needed — these typically settle within a few minutes of rinsing. If staining develops, mention it to your dentist at your next appointment. For any persistent or worsening symptoms, stop using the product and speak to your pharmacist or GP. If you suspect a serious allergic reaction, call 999 or go to your nearest A&E immediately. You can also report side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Colgate Plax Mouthwash Interact With Other Medicines?

Colgate Plax is applied topically in the mouth and is not swallowed, so systemic drug interactions are not a significant concern at normal doses. However, using it alongside chlorhexidine mouthwash is not recommended, as the two agents may reduce each other's effectiveness. If you are using any prescribed oral rinse or gel, check with your dentist or pharmacist before adding Colgate Plax to your routine. No significant interactions with systemic medicines have been identified for topical use at recommended doses.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

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Content last updated: 31 Mar 2025

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