Preservative failing PET - Help
Hey everybody. We are currently working with a lab to produce a range of men’s hair styling products (waxes, clays, pomades etc.). We recently got word that our ‘clay’ failed PET. Here is an ingredients list to give you an idea of what is in the formula.
WaterKaolin ClayNZ Glacial ClayCandelilla WaxPEG-40 HCOCetearyl AlcoholShea ButterGrapeseed OilPolysorbate 20GlycerinFragranceVP/VA CopolymerPhenoxyethanol
The only perservative in there is currently Phenoxy, and the head chemist thinks that we would be better to change that to increase efficacy. We head from the PET testing that the product initially did well, passing phase one, but once bacteria was introduced into the product, it failed. The chemist at the lab is suggesting moving to either paraben or dmdm hydantoin.. neither I am wholey comfortable with. I would prefer to continue down the Phenoxy route, and would be keen to hear what could be added to it to beef up it’s efficacy… I hear EDTA can sometimes be effective. Any advise I will pass onto the head chemist. The only ingredient that you probably aren’t familiar with is NZ glacial clay, which meets the labs standard in terms of bug count, coming in at 50 (I’m not sure what the scale is) with the limit being 100. Keen to hear your thoughts.