Independent Testing
INDEPENDENTLY TESTED. HELD TO THE HIGHEST SAFETY STANDARD.
An independent lab tested whether Talk stays clean and stable in the tube. Here is what it measured and what it found.
Test Standard: BS EN ISO 11930:2019 (Cosmetic Safety & Preservation)
Result: Talk toothpaste met "Criteria A" — the highest level of safety under this standard — for resisting microbial growth throughout testing.
| Category | Details |
|---|---|
| Purpose of Testing | To confirm Talk toothpaste stays free from harmful bacteria, yeast, and mold during storage and use. |
| Independent Testing Conditions | 22.5 ± 2.5°C, standard cosmetic microbiological testing environment. |
| Tested Microbes | - Pseudomonas aeruginosa (bacteria) - Staphylococcus aureus (bacteria) - Escherichia coli (bacteria) - Candida albicans (yeast) - Aspergillus brasiliensis (mold) |
| Sterility Check | No detected microorganisms (less than 10 CFU per gram) |
| Neutralization & Validation | Test system confirmed accurate — results verified by control analysis. |
| Overall Result | Product met “Criteria A” — the highest level of safety under the ISO standard. |
How Talk Toothpaste Performed
| Microbe Type | After 7 Days | After 28 Days | Safety Rating |
|---|---|---|---|
| Pseudomonas aeruginosa | No growth detected | No growth detected | Passed |
| Staphylococcus aureus | No growth detected | No growth detected | Passed |
| Escherichia coli | No growth detected | No growth detected | Passed |
| Candida albicans | No growth detected | No growth detected | Passed |
| Aspergillus brasiliensis | Minimal trace at 7 days; none by day 28 | No growth detected | Passed |
What This Means for You
- Talk's formula resisted microbial growth in the tube — no harmful bacteria, yeast, or mold detected at 7 or 28 days.
- Talk met "Criteria A," the highest safety level under the ISO 11930:2019 cosmetic standard.
- This testing measures product stability and preservation — one part of Talk's full safety picture, alongside vegan certification and FDA registration.
WHAT'S KEEPING IT CLEAN
Talk's preservative system — potassium sorbate and sodium benzoate — is what these results are measuring. Citric acid balances the formula's pH to keep everything stable over time.
Talk also contains aloe vera and eucalyptus oil, chosen for a smooth, soothing feel — they weren't part of this particular test, but they're part of why Talk feels the way it does.
For added transparency: Yuka, a 100% independent app that scans barcodes and rates products based on ingredient health impact, rated Talk toothpaste in the green category (Risk Free) with a score of 90/100.
19 out of 24 ingredients are categorized as NO RISK. 5 ingredients are categorized as LOW RISK.
See details below:
