Myrrh has been used in oral care for over 4,000 years. Here's the science behind why.

If you've ever read through the ingredient list on a genuinely natural toothpaste, you've likely seen myrrh listed somewhere near the bottom — tucked behind the hydroxyapatite and the essential oils. Most people skip past it. That's a mistake.

Myrrh toothpaste is one of the oldest forms of intentional oral care in human history, and the modern science increasingly backs up what herbalists and traditional practitioners have known for centuries. In this post, we're breaking down what myrrh actually does in a toothpaste formula, why CO₂ extraction makes a meaningful difference, and what to look for if you want a toothpaste that earns its herbal claims.

Myrrh isn't just a traditional ingredient — it's one of the most studied botanicals in oral care science, with decades of research supporting its role in gum health and microbial balance.

What Is Myrrh?

Myrrh is a resin harvested from Commiphora trees native to the Arabian Peninsula, the Horn of Africa, and parts of South Asia. When the bark is cut, a yellowish sap seeps out and hardens into irregular reddish-brown chunks — the raw resin that has been traded, burned, and used medicinally for millennia.

In ancient Egypt, myrrh was used in embalming preparations and sacred incense. In Ayurvedic medicine, it appears as guggul and is associated with purification. In traditional Chinese medicine, it was prescribed for wound healing and circulation. Across nearly every ancient medical tradition that had access to it, myrrh found its way into oral care rituals — chewed directly, dissolved in water as a rinse, or worked into tooth cleaning preparations.

Modern chemistry has identified the active constituents responsible for these effects: a class of compounds called sesquiterpenes and terpenoids (including furanoeudesma-1,3-diene and curzerene), along with polysaccharides and phenolic acids. These compounds are responsible for myrrh's place in evidence-based botanical research today.

What Myrrh Does in a Toothpaste Formula

1. Supports Gum Tissue Health

One of the most studied applications of myrrh in oral care is its role in supporting gum health. Research has examined myrrh-containing oral preparations for their effects on gingival tissue, with several studies noting improvements in gum comfort and tissue tone in participants using myrrh-based formulas compared to control groups.

This makes myrrh particularly relevant for anyone using a natural toothpaste as part of a gum health routine — especially when paired with other botanicals known for soothing properties, like aloe vera, licorice root, or rhatany root.

2. Microbial Balance in the Oral Ecosystem

Your mouth hosts hundreds of bacterial species. A healthy oral microbiome keeps the balance tilted toward the beneficial ones. Myrrh has been studied for its effects on oral microbial populations, with laboratory research showing activity against several bacterial strains associated with periodontal concerns and tooth decay.

This doesn't mean myrrh "kills bacteria" in the antibiotic sense — and that's actually the point. Broad-spectrum chemical antiseptics (like the chlorhexidine in prescription mouthwash or the alcohol in conventional rinses) disrupt the entire oral ecosystem. Botanical actives like myrrh appear to work more selectively — supporting balance rather than scorching the field.

3. Wound Healing and Tissue Soothing

Myrrh's traditional use in wound care isn't folk medicine nostalgia — the terpenoid compounds in myrrh resin have been studied for their effects on tissue repair and inflammation response. In the oral context, this translates to support for occasional gum soreness, minor tissue irritation, and post-dental sensitivity.

If you've ever used a natural herbal toothpaste and noticed your gums felt less reactive after a few weeks of consistent use, the myrrh in the formula may be part of that story.

4. Breath Freshness Without Alcohol

Myrrh has a warm, slightly bitter, resinous scent — not the sharp mint blast of conventional toothpastes. In a well-formulated natural toothpaste, myrrh works as part of a botanical freshness blend rather than the centerpiece. It contributes lasting breath support without the drying effect of alcohol-based formulas, which can actually worsen bad breath by disrupting the oral microbiome over time.

CO₂ Extraction: Why It Matters for Myrrh

Not all myrrh extract is created equal. The most common (and cheapest) extraction method uses alcohol or high-heat steam to pull compounds from the resin. Both methods degrade heat-sensitive terpenoids — meaning the extract you get is a diminished version of the original compound profile.

CO₂ extraction uses pressurized carbon dioxide as the solvent. Because CO₂ becomes a liquid at relatively low temperatures and leaves zero residue when it evaporates, CO₂ extracts preserve the full terpenoid profile of the myrrh resin — including the more volatile compounds that give it its distinctive herbal potency.

When a toothpaste lists "Myrrh CO₂" on the ingredient deck, it's a meaningful distinction. It signals that the formulator chose the more expensive, more complete extraction method over the cheaper alternatives. Look for it.

What to Look for in a Myrrh Toothpaste

A few things to check when evaluating a toothpaste that claims myrrh as an ingredient:

• CO₂ vs. standard extract: As covered above, CO₂ matters for compound integrity.
• Position in the ingredient list: Ingredients listed higher appear in greater concentration. Myrrh near the middle or top of a botanical stack indicates meaningful inclusion, not a label ingredient.
• Supporting botanicals: Myrrh works best in formulas where it's paired with complementary botanicals — rhatany root, licorice root, clove, calendula, or colloidal silver all work synergistically with myrrh's mechanisms.
• No synthetic antiseptics: If a formula includes triclosan, chlorhexidine, or cetylpyridinium chloride alongside myrrh, the synthetic ingredient is doing the actual work and the myrrh is decoration.
• Fluoride-free optional but relevant: Most consumers seeking out myrrh toothpaste are looking for a complete natural formula. If the toothpaste contains fluoride, verify the formulator has explained why — some do for legitimate reasons, but it's worth knowing.

Myrrh in Living Crystal Toothpaste

Our Living Crystal Toothpaste uses Organic Myrrh CO₂ as part of a 30+ botanical complex. It's not a token ingredient — it sits alongside rhatany root, licorice root CO₂, organic calendula, usnea lichen, clove, tea tree, and a full essential oil blend including peppermint, spearmint, wintergreen, and cinnamon bark.

The mineral foundation — spherical hydroxyapatite, theobromine, colloidal silver, zinc citrate, xylitol, zeolite clinoptilolite, bentonite clay, kaolin clay — handles the remineralization and microbial balance work. The botanical layer, anchored by myrrh, handles the tissue-supporting and breath-freshening depth that pure mineral formulas can't replicate on their own.

That combination is why Living Crystal is the closest thing we make to a complete oral care formula in a single tube.

If you want to extend the myrrh benefit to your rinse as well, our Restorative Mouth Rinse also includes Myrrh CO₂ as part of its 22-botanical formula — making the brush + rinse combination a consistent myrrh-forward oral care routine from start to finish.

Most people switch to natural toothpaste for what it doesn't contain. They stay because of what it does. Myrrh is one of the reasons.

The Bottom Line

Myrrh toothpaste isn't a trend or a marketing hook. It's one of the oldest documented uses of a botanical compound in human oral care, and the underlying science — on gum tissue support, microbial balance, and tissue soothing — gives it a legitimate place in a serious natural oral care formula.

When you see myrrh CO₂ on an ingredient deck, you're looking at a formulator who understood why it belongs there.

Also in the oral care routine: Restorative Mouth Rinse (22 botanicals including Myrrh CO₂) · Antioxidant Oil Pull · Full Oral Care Collection