For those who switched from Crest to a “pure” toothpaste, I would like you to go seize the tube proper now.
I’d such as you to flip it over and skim the substances.
For those who see peppermint oil, tea tree oil, spearmint oil, wintergreen, clove oil, or cinnamon oil — your “pure” toothpaste is disrupting your oral microbiome.
I do know that is onerous to listen to. You made the change since you care about what goes into your physique. You probably did the analysis. You thought you had been doing the best factor.
However right here’s what no one instructed you: important oils are antimicrobial. That’s the entire level of them — that’s why they’ve been used for lots of of years in wound disinfection and cleansing merchandise. They’re extraordinarily efficient at killing microbes. The issue is, they don’t know the distinction between the micro organism which might be defending you and the micro organism which might be harming you.
Some important oils are as highly effective as chlorhexidine — the nuclear choice your dentist prescribes after surgical procedure. And also you’re brushing with them. Twice a day. On daily basis.
So What?
Right here’s the place the widespread phrase “they kill unhealthy micro organism however spare good micro organism” breaks down. It’s not simply incorrect — it displays a flawed mind-set in regards to the oral microbiome.
Your mouth comprises over 700 species of micro organism. However they aren’t divided into mounted groups of “good guys” and “unhealthy guys.” Most oral microbes are context-dependent — the identical species will be helpful or dangerous relying on the steadiness of the group round it.
A bacterium that’s completely innocent when your ecosystem is secure can change into disease-associated when that steadiness is disrupted.
Well being isn’t about killing the best micro organism. It’s about sustaining a secure, purposeful ecosystem.
Important oils are inherently bactericidal. They work by way of non-specific mechanisms — disrupting cell membranes, interfering with metabolic processes — which means they apply stress broadly, not selectively.
Once you introduce that sort of indiscriminate stress twice a day, you don’t simply take away dangerous exercise. You destabilize all the ecology. You cut back helpful features. You alter microbial communication.
And the organisms that bounce again quickest in a destabilized setting are the opportunistic ones. The disease-associated ones.
Important oils don’t simply take away dangerous exercise — they’ll destabilize the very ecology that retains your mouth wholesome.
For this reason a few of you’re doing “all the pieces proper” — brushing, flossing, consuming nicely — and nonetheless getting cavities, nonetheless getting bleeding gums. Nonetheless getting instructed you want one other process.
It’s not your fault. It would simply be your toothpaste.
It’s Not Simply Important Oils
As soon as I began toothpaste formulations — actually trying — I discovered drawback after drawback. Even within the “good” manufacturers. Even within the ones I used to be recommending to my very own sufferers.
SLS (Sodium Lauryl Sulfate) — the ingredient that makes your toothpaste foam. That foam feels prefer it’s cleansing your tooth. It’s not. It’s stripping the protecting mucosal lining inside your mouth. I may at all times inform when my sufferers had been utilizing a toothpaste with SLS due to the sloughing of cheek cells I’d see on my intraoral mirror — it’s one of the crucial recognizable situations within the mouth. A number of research have linked SLS to elevated canker sore frequency. The cleansing resolution I take advantage of on our storage flooring is 50% SLS. And that is the ingredient most individuals are placing of their mouth twice a day.
Emulsifiers — they maintain the substances blended collectively on the shelf. Handy for manufacturing. However emulsifiers can disrupt the fragile steadiness of your oral microbiome too.
Endocrine disruptors — substances like triclosan and sure preservatives that intrude along with your hormonal system. In your mouth.
Go learn the again of your toothpaste tube — even the one from the well being meals retailer — and ask your self: Do I do know what each one in all these substances is doing inside my mouth?
My Confession
I’ve been writing about this drawback for nearly a decade. In 2017, I printed an article on my web site referred to as “Important Oils — The Probably Unhealthy Ingredient in Your ‘Wholesome’ Toothpaste.” I laid out the science. I cited the research.
After which on the backside of that article, I needed to make an admission: I used to be nonetheless utilizing Boka — a toothpaste with important oils in it. As a result of Boka additionally contained nano-hydroxyapatite, and on the time, it was the most effective nano-hydroxyapatite toothpaste available on the market. I really useful it to my sufferers for years. The nano-hydroxyapatite was too essential to surrender — it was non-negotiable for me.
However the important oils? The SLS? These had been the tradeoff I accepted, as a result of no one had made a nano-hydroxyapatite toothpaste with out them but. I even wrote on the finish of that 2017 article: “I absolutely understand that there are hardly any important oil-free choices on the market available on the market.”
That tradeoff is strictly why I constructed Fygg.
Fygg is the toothpaste I spent my complete profession wishing existed. No fluoride. No important oils. No SLS. No emulsifiers. No detergents. No endocrine disruptors.
Simply substances that remineralize your tooth and nourish your oral microbiome as an alternative of destroying it.
No burn. No foam. The primary time you employ it, it’ll really feel totally different. That’s since you’ve been educated to suppose toothpaste ought to sting. That sting was by no means cleansing your tooth — it was the important oils and SLS attacking your delicate tissue. As soon as that’s gone, you understand: this is how toothpaste ought to really feel.
And the science backs it up. A 2025 examine printed within the Journal of Dentistry — carried out on the College of Texas Well being San Antonio — examined eight toothpastes head-to-head on their means to remineralize early enamel caries lesions.
Fygg achieved roughly double the remineralization of Boka, and the distinction was statistically vital (p < .01). Fygg additionally carried out on par with prescription-strength fluoride toothpaste (5,000 ppm). You possibly can learn the total examine right here: PubMed
My entire household makes use of Fygg — my daughters, my grandchildren. It’s the primary toothpaste I’ve ever been capable of advocate with out an asterisk. No ‘it’s nice, however…’ No tradeoffs.
>> Strive Fygg (code ATD15 for 15% off)
Have an exquisite week,
Mark
Go Deeper
Important Oils — The Probably Unhealthy Ingredient in Your “Wholesome” Toothpaste — My unique 2017 article laying out the science on important oils and the oral microbiome.
Why Do I Hold Getting Canker Sores? — The complete breakdown on SLS, zinc deficiency, and the foundation causes most dentists miss.
It’s Time for Dentists to Confront the Fact About Fluoride — Why I ended recommending fluoride, and what the federal court docket ruling means for your loved ones.
Mark’s Should-Haves for Fluoride-Free (and Cavity-Free) Youngsters — My full oral care protocol for youngsters — no fluoride required.
Podcast Episode #110: Redefining Tooth Care with Fluoride-Free Improvements
Podcast Episode #107: Fluoride Varnish + New Options
The remineralization examine (Journal of Dentistry, 2025) — The top-to-head comparability of eight nano-hydroxyapatite and fluoride toothpastes, together with Fygg, Boka, Dr. Jen’s, Risewell, and prescription power fluoride toothpaste.
