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Preservatives in a toothpaste
Here is the LOI for 2 toothpastes that do NOT have a preservative in them.
WHAT GIVES?
TOM’S OF MAINE VARIETY (this was purchased when Tom’s was already part of Colgate)
Calcium carbonate, glycerin, aqua, xylitol, hydrated silica, aroma, sodium lauryl sulfate, zinc citrate, carrageenan, sodium bicarbonate.
TRADER JOE’S VARIETY
Calcium carbonate, water, glycerin, sodium bicarbonate, sodium stearoyl lactylate, peppermint oil, hydrated silica, sodium cocoyl glutamate, carageenan, sodium monofluorophosphate.
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7 Replies
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(esp. natural) positioned toothpaste is often poorly preserved - relying on flavor components, Aw and fairly protective packaging. Manufacturing needs to have real tight controls.
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This reply was modified 5 days, 6 hours ago by PhilGeis.
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This reply was modified 5 days, 6 hours ago by
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I develop toothpaste for another company. We meet Natrue & ISO 16128-1 and we do not have any preservatives in most of them.
Our toothpaste has been tested by independent labs to show that our toothpaste is not only stable and resist microchallenge & log count testing, but we have proven that our toothpaste is not only stable for the 3 year shelf life, and we have tested our toothpaste to 5 years too - with only a decline in flavour.
The toothpaste preservation is a combination of low water activity (Aw <0.2), and to some degree the use of various essential oils used as flavouring. We have used Totarol as an antimicrobial; but have found that we do not even need to use it.
We have tested to BP/USP micro standards and also ISO 18415. One of our kids toothpaste using commercial flavours failed BP/USP stability testing, but passed ISO 18415. Whilst we know we would be apparently safe selling it, we have used potassium sorbate as more of a belt & braces approach and we know this has passed BP/USP micro testing.
We use no special packaging - just a standard toothpaste tube.
I hope that helps.
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Can’t edit the above - but I forgot we also tested to ISO 11930.
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At 0.2 Aw you should not bother to challenge test. Stndard tube is protective packaging.
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This reply was modified 3 days, 8 hours ago by PhilGeis.
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Agreed re standard tube being protective packaging; I was thinking more of the airless pumps and other more fancy packaging options that are also being used for packaging toothpaste.
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Take a look at ISO 29621
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This reply was modified 3 days, 8 hours ago by
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