8 Best SLS-Free Toothpastes (2025): A Dentist’s Guide

Choosing the best SLS free toothpaste can make a world of difference if you’re suffering oral discomfort. They do not contain sodium lauryl sulphate, which is a common ingredient in many personal care products.

Sodium Lauryl Sulphate (SLS) is used to create foaminess while you brush, but it can also irritate the mouth lining. For some individuals, it may cause soreness or aggravate existing sensitivities.

If you have sore or sensitive gums, try switching to an SLS-free toothpaste.

As a dentist, I often recommend SLS-free alternatives to patients who experience dry mouth, recurrent ulcers, or discomfort from conditions like oral lichen planus or burning mouth syndrome. Although SLS-free toothpastes can be less foamy, they are equally effective in cleaning your teeth.

I recommend Oral-B Densify Decay Control as the best overall SLS-free toothpaste. It’s gentle on the gums, has a pleasant taste, and contains stannous fluoride, an important ingredient for preventing gingivitis and decay. I personally use it to avoid the peeling or sloughing that can occur with SLS-containing toothpastes.

Why is SLS in Toothpaste?

Sodium lauryl sulphate (SLS) is a common detergent and surfactant found in many toothpastes. It’s responsible for creating the foam that helps to spread toothpaste around your mouth and remove plaque. Many people enjoy the clean and fresh feeling that comes with foamy toothpaste, but there are some important effects and potential side effects to consider when using a product containing SLS.

Benefits of SLS in Toothpaste

Foaminess

SLS helps toothpaste foam, which aids in spreading it throughout the mouth and cleaning your teeth effectively. The foamy texture is also a key factor in the satisfying “freshness” people often associate with brushing.

Effectiveness

SLS-containing toothpastes are very effective at removing plaque and maintaining gum health.

Taste

SLS can slightly alter the flavour of toothpaste, which may be noticeable to some users.

Common Side Effects of SLS in Toothpaste

While SLS can provide benefits in terms of cleaning, it’s also associated with several potential side effects, particularly for people with sensitive mouths or pre-existing oral conditions. These include:

Irritation and Sensitivity

SLS can cause sloughing or peeling of the soft tissues inside the mouth, leading to a sore or raw feeling, especially on the inside of the cheeks, tongue, or gums. Some individuals may experience a burning or tingling sensation after brushing with SLS-containing toothpaste.

Delayed Healing

For those with existing oral sores or ulcers, SLS can slow down the healing process. It may aggravate conditions like oral lichen planus, which causes white patches, redness, and swelling on the mouth’s lining.

Worsening of Pre-existing Oral Health Conditions

SLS has been linked to the exacerbation of several oral health conditions, including:

Burning Mouth Syndrome: A recurring sensation of burning in the mouth with no obvious cause.

Dry Mouth: Reduced saliva production leading to discomfort and increased risk of cavities.

Recurrent Oral Ulceration (Canker Sores): Persistent and painful ulcers that appear inside the mouth.

Sensitive Gums: Increased sensitivity or soreness of the gums, especially when brushing.

Sensory Sensitivities

Individuals with sensory sensitivities, such as those with autism, may find the foaminess and texture of SLS-containing toothpaste uncomfortable. Many prefer a gentler, low-foam, SLS-free alternative for a more tolerable brushing experience.

Fluoride Absorption

While there are claims that SLS might impact the absorption of fluoride—potentially affecting enamel strengthening—the evidence for this is not conclusive. However, if you’re prone to sensitive teeth or are concerned about fluoride absorption, it might be worth considering an SLS-free alternative.

What to Do if You Experience Irritation

If you notice a burning, tingling, or sore sensation after brushing with an SLS-containing toothpaste, it may be worth switching to an SLS-free option. This small change can make a noticeable difference in comfort, especially for those with sensitive mouths or oral conditions. Research shows that SLS-free toothpaste is just as effective in removing plaque and keeping gums healthy, so you don’t lose any key benefits by opting for a toothpaste without SLS.

In the next section, I’ll discuss some of the best SLS-free toothpastes available, including options for children, those needing fluoride-free formulas, and products designed for sensitive mouths. Read on to find the best alternative for your oral health needs.

Top 8 Picks for SLS Free Toothpastes

Best Overall – Oral-B Pro-Science Clinical Densify Toothpaste

Best SLS Free Toothpaste for Sensitivity – Sensodyne Pronamel

Best SLS Free Toothpaste for Dry Mouth – Biotène SLS-Free Dry Mouth Toothpaste

Best SLS Free Toothpaste for Kids – Aquafresh Kids Strawberry Toothpaste

Best Unflavoured SLS Free Toothpaste – Oranurse Unflavoured Toothpaste

Best SLS Free Toothpaste for Stain Removal – Waken Whitening Toothpaste

Best SLS Free Toothpaste with Hydroxyapatite – ZING Toothpaste

Best SLS Free + Fluoride Free Toothpaste – Davids Natural Whitening Toothpaste

When picking an SLS-free toothpaste, consider the key ingredients that replace SLS. A popular alternative is cocamidopropyl betaine (CAPB), and is often used as a milder and less irritating foaming agent. Although uncommon, some people may experience sensitivity to CAPB also.

Other natural alternatives include sodium methyl cocoyl taurate, which is mild and non irritant, but doesn’t produce much foaminess.

Best SLS Free Toothpaste Overall

Why our dentists recommend this toothpaste:

I use Oral-B Densify Decay Control because I experienced sloughing and sores with SLS-based toothpastes, so switching to this has worked well for me. It’s perfect for daily use, and I really appreciate that it contains stannous fluoride, which is great for fighting decay and gingivitis. When used twice a day, it helps reverse calcium loss and strengthens enamel, particularly on the surface and along the gum line, reducing sensitivity.

The eucalyptus peppermint flavour is refreshing, and despite the lack of SLS, the cocamidopropyl betaine gives a nice foamy texture, leaving my mouth feeling noticeably cleaner.

Just a heads-up: Oral-B Densify Decay Control is SLS-free, but other toothpastes in the Densify range may still contain SLS, so it’s important to check the label before buying.

Best SLS Free toothpaste for Sensitivity

Why our dentists recommend this toothpaste:

A brilliant SLS- free choice that comes highly dentist recommended for those seeking to protect sensitive teeth while strengthening enamel.

Acids from foods and drinks can gradually wear away tooth enamel, exposing softer and more sensitive dentine underneath, and making teeth more vulnerable to damage. Pronamel’s Intensive Enamel Repair formula is designed to actively repair acid-weakened enamel, helping to rebuild strength and protect against future acid erosion.

The toothpaste works by locking in essential minerals that penetrate deep into the enamel’s surface, repairing microdamage and reinforcing its structure. This offers long lasting protection from sensitivity.

Best for SLS Free Toothpaste for Dry Mouth

Why our dentists recommend this toothpaste:

Biotene Toothpaste is a great choice for those suffering from dry mouth (xerostomia), thanks to its moisturising formula. It contains special agents that help to mimic the natural flow of saliva, keeping the mouth hydrated and reducing the discomfort typically associated with dry mouth. This gentle, lubricating effect soothes the tissues in the mouth, providing much-needed relief and making the mouth feel more comfortable throughout the day.

Biotene is SLS-free, crucial for people with dry mouth. Its mild formula is designed to clean teeth without causing further irritation or discomfort. Neutralising odour-causing compounds helps to freshen bad breath and 1450ppm fluoride means that it is suitable as a daily toothpaste to strengthen enamel and protect against cavities.

Best SLS free toothpaste for Kids

Why our dentists recommend this toothpaste:

Aquafresh Splash is a favourite with my own children – a gentle and effective SLS-free toothpaste for kids aged 3-8. The mild strawberry and mint flavour is perfect for children who aren’t keen on strong minty tastes, and the smooth, creamy texture makes brushing a more pleasant experience. It foams up nicely without being harsh on sensitive gums.

This toothpaste is free from artificial flavours and sweeteners, and it’s made with 95% naturally derived ingredients. It’s also sugar-free and vegan-friendly, providing a healthier option for your little ones.

Instead of SLS, Aquafresh Splash uses Sodium Methyl Cocoyl Taurate, a natural, non-irritating alternative. The formula is also low-abrasive, making it gentle on your child’s enamel, which is 50% thinner than that of adults.

Best Unflavoured SLS Free Toothpaste

Why our dentists recommend this toothpaste:

Oranurse Toothpaste is a mild, unflavoured option, making it ideal for those who are sensitive to strong tastes. Its gentle formula contains no SLS or foaming agents, so it’s non-irritating and perfect for individuals with sensitivities or allergies.

I highly recommend it for people with oral health conditions like Lichen Planus or for those recovering from head and neck treatments, as it avoids common irritants. It’s also suitable for both adults and children, including those with learning disabilities or sensory issues. Many parents of children with autism have reported positive experiences, particularly those whose children struggle with strong flavours or foamy textures.

For younger children, a 1000ppm fluoride version is also available.

Best for SLS Free Toothpaste for Stain Removal

Why our dentists recommend this toothpaste:

Waken whitening toothpaste claims to whiten teeth by up to 8 shades of white, when used twice a day. It uses natural plant enzymes to prevent stains caused by tea, coffee, red wine and cigarette smoke. I am a little sceptical about its ability to effectively whiten teeth, though it is effective at stain removal.

The natural peppermint flavour is refreshing, and the toothpaste feels gentle whilst still offering effective care for your teeth and gums. The taste and texture are subtle, leaving a clean aftertaste without feeling overly harsh. With the addition of the dentist recommended 1450ppm fluoride, it also guards against plaque and decay.

The Waken Whitening Toothpaste is SLS-free, vegan, and comes in an eco-friendly aluminium tube that you can recycle endlessly.

Best for SLS Free Toothpaste containing Hydroxyapatite

Why our dentists recommend this toothpaste:

ZING toothpaste is a fantastic option for anyone looking for a refreshing, effective, and eco-conscious oral care product. It comes in 4 fun flavours: original mint, soft lemon, soft peach, and apple & kiwi. The 3 alternative flavours are great tasting, especially if you’re not a fan of minty toothpastes.

It leaves your teeth feeling clean and fresh without being too harsh. ZING is packed with 1450 ppm of fluoride for strong cavity protection, along with Hydroxyapatite to help repair enamel and reduce sensitivity. The inclusion of Papain tackles stains and with low abrasivity, meaning it wont damage your teeth with use.

Importantly, it’s free from SLS and Titanium Dioxide, vegan, cruelty-free, and comes in 100% recyclable tubes. Made in the UK, it’s a great choice for adults and children over the age of 7.

ZING toothpaste may be a bit more expensive than some other brands, but it’s definitely a high-end, well-crafted product that’s worth the investment. Enter code MPD10 to get 10% off.

Best Fluoride Free SLS Free Toothpaste

David’s NanoHydroxyapatite Natural Toothpaste is an excellent SLS-free and fluoride-free option, designed to strengthen enamel, reduce sensitivity, and brighten your smile. It uses Nano Hydroxyapatite, a mineral clinically proven to remineralise enamel, offering a strong alternative to fluoride for those who prefer to avoid it.

The toothpaste has a low RDA (abrasiveness) score, meaning it cleans effectively without damaging enamel, making it gentle yet effective.

The micro-polishing agents work to remove surface stains, providing a whitening effect without the sensitivity often associated with peroxide-based products. Free from SLS, it’s perfect for those with sensitive gums or mouth conditions.

With a refreshing peppermint flavour, it leaves your mouth feeling clean and fresh, without the harsh burn that some SLS-based toothpastes can cause.

Buying Guide

Sodium lauryl sulfate (SLS) can cause irritation to the mouth and gums. If you have a sore, dry mouth, recurrent ulcers, or sensitive gums, try an SLS free toothpaste. Many people report improvements in their symptoms after switching to an SLS free paste.

SLS alternatives in Toothpaste: potential irritants?

SLS-free toothpastes replace sodium lauryl sulfate (SLS) with milder ingredients to create foam, which makes them gentler on the gums. Many users report significant improvements in issues like mouth ulcers or gum irritation after switching to these alternatives. A common replacement for SLS is Cocamidopropyl betaine (CAPB), found in products like TePe Daily and Oral B Densify Decay Control. While CAPB is less likely to irritate, some people may still experience sensitivity.

If you’re still experiencing mouth soreness after switching to CAPB-based toothpaste, you might want to try toothpastes formulated with natural, gentler surfactants, such as:

Sodium cocoyl glutamate

Sodium methyl cocoyl taurate

Coco-glucoside

Decyl glucoside

These natural ingredients clean effectively while minimising irritation, though they may produce less foam than traditional surfactants like SLS. Despite the reduced foam, they provide a thorough cleaning and are ideal for sensitive mouths.

Fluoride: Yes or No?

According to the British Dental Association (BDA), fluoride toothpaste is the gold standard in decay protection for all ages. I always recommend that my patients use a pea sized amount of fluoride toothpaste twice daily with an electric toothbrush for healthy teeth and gums. It helps to prevent cavities, strengthen enamel, and keep your smile bright.

There are many SLS free toothpastes that contain fluoride

NB. Duraphat toothpaste, high fluoride, 2800/5000ppm contains SLS. Your dentist may have prescribed this to you if youre at high risk of decay. Try an SLS free alternative and ask your dentist to consider applying fluoride varnish regularly instead.

For those that want to look for natural alternatives to fluoride in toothpaste, consider the use of a hydroxyapatite toothpaste.

How do I know if my toothpaste is SLS free?

Start by checking the ingredients list. Look at the back of the toothpaste box or tube. If the list doesn’t mention sodium lauryl sulpate (SLS), you’re on the right track.

Some brands, like Sensodyne, Oral B, and Corsodyl, offer both SLS-free and SLS-containing options. So, it’s important to carefully check the labels each time you buy.

Look for labels. Some toothpastes proudly advertise their SLS-free status right on the front. Keep an eye out for labels or logos that claim “SLS-free” or similar terms.

Frequently Asked Questions