Preservatives are under constant scrutiny by consumers and the cosmetics industry with many usage restrictions and bans now in place. The more traditional preservative systems such as Parabens and MIT/ MIC have been the subject of much negative publicity, making the drive towards alternative preservation more relevant than ever.
Let’s look at the organic acids first: these ingredients are able to destroy germs by the continuous acidification of cell cytoplasm, increasing the osmotic pressure due to intake of electrolytes (e.g. Na+) and by the loss of energy in the active transport mechanism within the membrane.
Antimicrobial actives range.