Why Grin?

At Grin we’re all about what we leave in, what we leave out, and how we leave your teeth. Our formulation is natural and helps to improve your oral hygiene - because toothpaste needs to get the job done.

What we leave in


What is it?

Health Benefit


Often referred to as “bee glue”, propolis is resinous mixture that honey bees collect from tree buds, sap flows, or other botanical sources.

Propolis has antiseptic properties to help keep the mouth healthy. 

Manuka Oil 

Extracted from the leaves and small branches of the Manuka tree (Leptospermum scoparium), which is native to New Zealand.

Our studies show that Manuka oil has good potential to suppress the growth of some common aerobic oral bacteria in vitro.

Organic Sea Salt  

When salt is certified organic the certification refers to the process of collection of sea salt.

Regular rinsing and gargling with tepid sea salt water helps to manage oral hygiene and to soothe an irritated mouth. 


A flowering plant species in the carrot family. Fennel is a hardy, perennial herb with yellow flowers and feathery leaves.

Fennel has been in use in culinary applications and as a mouth freshener since ancient times.


A organic compound made synthetically, or obtained from corn mint, peppermint or other mint oils.

Used to help soothe an irritated mouth or throat.


A herbaceous perennial plant with a square-shaped stem, broad leaves, and white/pink flowers.

Helps to keep your mouth and throat clean, and is effective in supporting dental and gum health.

Organic Calendula Oil

Calendula is an annual flower from the daisy family that is native to northern Mediterranean countries. Calendula flowers are more commonly known as marigolds.

Pharmacological studies suggest that Calendula oil contains antimicrobial and antioxidant compounds that are effective in killing bacteria. The anti-inflammatory properties of calendula help to soothe gums.

Organic Aloe Leaf Extract

Aloe Vera is a short-stemmed plant with thick, fleshy, moisture rich leaves. It is cultivated for agricultural and medicinal uses.

Aloe Vera is effective in cleaning teeth and helps to eliminate cavity-causing bacteria. 

Sodium Bicarbonate

Sodium Bicarbonate or Baking Soda is a mineral composed of sodium ions and bicarbonate

It helps to removing stains and discolorations from the surface of teeth, which gives teeth a whiter, brighter appearance.

What we leave out

Sodium Lauryl Sulfate

We do not use SLS (short for Sodium Lauryl Sulfate), which is a common component of ordinary toothpastes. This chemical compound does not actually clean teeth—its sole purpose is to produce foam, which only gives the impression of cleaning.  In some people, it can cause skin irritation.

Artificial Colours 

Because we do not add artificial colours, the appearance of our products may vary from batch to batch.

Artificial Flavours or Fragrances 

We do not use any synthetic flavours or fragrances—we prefer a fresh, natural taste from 100% natural essential oils and are sure you will, too!

Artificial Preservatives (EDTA, Formaldehyde, Parabens etc.) 

Natural preservatives work as well, if not better, than artificial alternatives.

Artificial Sweeteners or Saccharin

Many conventional toothpastes contain artificial sweeteners. In Grin Natural Toothpaste, we rely on the natural sweetness of xylitol, spearmint and fennel.

Hydrogen Peroxide

Many whitening toothpastes contain hydrogen peroxide, a bleaching agent. In Grin Natural Whitening Toothpaste we use baking soda to whiten teeth naturally.

Animal Testing

We use non-animal-testing models for all our products.

CDC,  (2012) Prevalence and Severity of Dental Flourosis in the United States, 1999-2004. U.S. Department of Health and Human Services. 

How we leave your teeth

Between 2015 and 2016, we carried out in vitro (laboratory) testing with a leading New Zealand University to test the active ingredients in Grin Natural Toothpaste because we know how important it is for toothpaste to be effective.

Seven of the ingredients used in Grin Natural Toothpaste showed strong ability to inhibit the growth of the six common oral bacteria (Streptococcus (S).mutans, S. sanguinis, R. dentocariosa, S. salivarius, S. oralis and Staph. epidermidis) when incubated at 37°C over a 48-hour period. (S.mutans is the oral bacteria that is associated with human tooth decay.)

In vitro results obtained from this study showed that grin™ natural (cool mint) toothpaste has the ability to suppress the growth of aerobic bacteria (S. mutans, S. sanguinis, R. dentocariosa, S. salivarius, S. oralis and Staph. Epidermidis) when incubated at 37°C over a 48-hour period. 

For more information please feel free to contact us.