Preservatives: Geogard Ultra
Geogard Ultra is an interesting broad spectrum preservative in that it contains no parabens or formaldehyde releasers, and it depends upon sodium benzoate – an organic acid – as the main preservative. It comes in a white powder format and the INCI is D-Glucono-1,5-lactone (aka gluconolactone, 70% to 80%) and sodium benzoate (22% to 28%)....