Toothpaste, mouthwash and lip balm with a coconut allergy

Toothpaste is the product you put in your mouth twice a day and never read. It foams, and by now you know what that usually means.

What makes it foam

The American Dental Association puts it simply: detergents such as sodium lauryl sulfate and sodium lauryl sarcosinate are used for foaming action [1]. Cocamidopropyl betaine does the same job [2]. All three are built on the twelve-carbon fatty chain that comes from coconut or palm kernel oil, or in the case of sodium lauryl sulfate, sometimes from petroleum. Why that chain keeps turning up.

Here is what the labels of mainstream US toothpastes list, read from the manufacturers' filed drug labels [3]:

Toothpaste	Foaming agents on the label
Colgate Cavity Protection	sodium lauryl sulfate
Colgate Total Active Prevention	sodium lauryl sulfate, cocamidopropyl betaine
Crest Cavity Protection	sodium lauryl sulfate
Crest Pro-Health	sodium lauryl sulfate, cocamidopropyl betaine
Arm & Hammer fluoride toothpaste	sodium lauroyl sarcosinate, sodium lauryl sulfate
Sensodyne Repair & Protect	sodium lauryl sulfate, cocamidopropyl betaine
Kids' Crest Sparkle Fun	sodium lauryl sulfate
Tom's of Maine Kids Silly Strawberry	sodium lauryl sulfate

Most also list glycerin near the top, which can be made from any fat or oil.

The one toothpaste in our registry so far is the same story: cocamidopropyl betaine, and glycerin.

"SLS-free" swaps one for another

Toothpastes sold as SLS-free still have to foam, and what they use instead is also coconut chemistry.

• Pronamel says no Pronamel toothpaste contains SLS [4]. Its label lists cocamidopropyl betaine [3].
• Hello is made without SLS [5]. Its kids' toothpaste lists cocamidopropyl betaine and sodium cocoyl glutamate [3].
• Tom's of Maine Whole Care lists lauryl glucoside and disodium cocoyl glutamate [3]. Tom's own ingredient pages describe these as derived from coconut or palm kernel oil [6].
• Burt's Bees Kids lists sodium lauryl glucose carboxylate and lauryl glucoside [3].

If cocamidopropyl betaine is what you react to, "SLS-free" is the label that is more likely to contain it. That is the same trap as sulfate-free shampoo.

Some list coconut outright

• Hello Naturally Whitening lists Cocos nucifera (coconut) oil [3].
• Dr. Bronner's toothpaste lists potassium cocoate, coconut flour and coconut oil [7].

Coconut oil has become a selling point in "natural" toothpaste. For a food allergy these are the ones that matter most, because the ingredient is coconut itself and not a refined foamer.

What is known about reactions

Around the mouth, flavourings are the usual cause. DermNet says flavourings are the major cause of allergic reactions to toothpaste, and that such reactions are fortunately rare [2]. The ADA names spearmint, peppermint and cinnamon oils as the most common source [1]. Reactions usually show up as cheilitis, inflamed and cracked lips, with or without a rash around the mouth [8].

Cocamidopropyl betaine is a documented, less common one. DermNet records it causing allergic cheilitis from a combined toothpaste-mouthwash [2], and there is a published case of a ten-year-old whose patch test was strongly positive to it [9]. When researchers looked through 80 toothpastes, flavouring was in 95% of them and cocamidopropyl betaine in 16 [10].

So if your lips or the corners of your mouth are the problem, toothpaste is a reasonable suspect, and the flavour is a likelier culprit than the coconut. Either way the test is a patch test: how that works.

For a food allergy, the evidence is thin. Toothpaste isn't meant to be swallowed, but it is in your mouth. Anaphylaxis UK's guidance on non-food products doesn't mention toothpaste by name. It does say the risk is likely to be higher when a product is swallowed than when it stays on the skin, that for highly refined oils the risk may be small or there may be none at all, and it advises avoiding products that contain the food you are allergic to [11]. We found no allergy organisation with a statement about coconut in toothpaste specifically.

Mouthwash

Mostly quieter. The labels we read for Listerine Cool Mint, Biotène mouthwash and ACT list no coconut-named ingredient [3, 12]; the solubiliser is usually poloxamer 407. Some do contain glycerin or polysorbate 20, which we mark as "can't be verified".

The exception is, again, the "natural" end: mouthwashes sold with coconut oil on the front. And note that a brand's mouthwash and its toothpaste are different formulas: Biotène's mouthwash lists no cocamidopropyl betaine, and its toothpaste does [3, 12].

Lip balm

Lip balm matters more than its size suggests, because most of it ends up eaten.

Lip balm	What the label lists
Burt's Bees Beeswax	Cocos nucifera oil, second ingredient [13]
Burt's Bees SPF 30	caprylic/capric triglyceride [3]
Aquaphor Lip Protectant + Sunscreen	caprylic/capric triglyceride [3]
ChapStick Classic Original	no coconut name; cetyl alcohol and isopropyl myristate [3]
Carmex Classic (jar)	no coconut name; lanolin, beeswax, paraffin, cocoa butter [14]

Formulas change and differ by country, so treat that as a snapshot of five labels, not a recommendation.

Where to find the list

• In the United States, a fluoride toothpaste is an over-the-counter drug, so it carries a Drug Facts panel with every inactive ingredient listed [15]. Those labels are public: search the product on DailyMed, the National Library of Medicine's label database, and you can read the full list before you buy.
• In the European Union, toothpaste is a cosmetic and must carry a full ingredient list, though on a small tube it may be on the box only [16].
• Flavour is one word. On either side of the Atlantic the flavouring can be declared simply as "flavor" or "aroma" [16], so a coconut flavour would not be named.

At the dentist

Polishing pastes, fluoride varnishes and numbing gels come in flavours, and piña colada is a common one [17]. Their ingredient lists are often not published. One varnish maker's allergen statement lists tree nuts, peanuts, milk, soy and others, and doesn't mention coconut either way [17].

We found no documented coconut reaction to a dental product, and no way to tell from the outside whether those flavours contain anything from a coconut. So say it at the start of the appointment, and ask for a different flavour. It costs them nothing.

What to do

• Read your toothpaste once, the way you read your shampoo. Photograph the box and the checker marks the names.
• Don't trust "SLS-free" or "natural" to mean coconut-free. Check for cocamidopropyl betaine, the glucosides, the glutamates and coconut oil itself.
• If your lips are the problem, raise toothpaste and lip balm with your dermatologist and ask about patch testing.
• Lip balm goes in your mouth. Read it as food.

Related

The two kinds of coconut allergy · How to find a shampoo without coconut · Coconut's many names · The complete guide

Sources

1. American Dental Association. “Toothpastes.” ada.org
2. DermNet. “Contact reactions to toothpaste and other oral hygiene products.” dermnetnz.org
3. Drug Facts labels filed by the manufacturers, on DailyMed (US National Library of Medicine), read October 2026: Colgate Cavity Protection · Colgate Total Active Prevention · Crest Cavity Protection · Crest Pro-Health · Arm & Hammer · Sensodyne Repair & Protect · Kids' Crest · Tom's Kids · Pronamel · Hello Kids · Hello Naturally Whitening · Tom's Whole Care · Burt's Bees Kids · Biotène toothpaste · Listerine Cool Mint · ACT Anticavity · Burt's Bees SPF 30 lip balm · Aquaphor Lip Protectant · ChapStick Classic
4. Pronamel. “About sodium lauryl sulfate.” pronamel.us
5. Hello Products. Antiplaque and whitening toothpaste. hello-products.com
6. Tom's of Maine, ingredient pages: sodium cocoyl glutamate · lauryl glucoside
7. Dr. Bronner's. Peppermint All-One Toothpaste, ingredients. drbronner.com
8. de Groot A. Review of contact allergy to toothpastes, 2017. PubMed
9. Case report of contact allergy to cocamidopropyl betaine in toothpaste. PubMed
10. Zirwas M.J., Otto S. “Toothpaste allergy diagnosis and management.” Journal of Clinical and Aesthetic Dermatology. jcadonline.com
11. Anaphylaxis UK. “Cosmetics and medicines for people with food allergies” factsheet, 2025. PDF
12. Haleon. Biotène mouthwash, ingredients. haleonhealthpartner.com
13. Burt's Bees UK. Beeswax Lip Balm, ingredients. burtsbees.co.uk
14. Carmex. Original Lip Balm Jar, ingredients. mycarmex.com
15. US FDA. “Is it a cosmetic, a drug, or both? (Or is it soap?)” fda.gov
16. Regulation (EC) No 1223/2009 on cosmetic products, Article 19. legislation.gov.uk
17. Manufacturers' product pages: Young D-Lish prophy paste · VOCO Profluorid Varnish

Educational only, not medical advice. Always confirm with your allergist.