The larger the hydrocarbon chain of parabens, the stronger the lipophilicity, and the greater this effect.
At the same time, the greater the amount of ester adsorbed by the bacteria, the greater the inhibition of bacterial development.
Paraben esters are the most widely used in cosmetics.
Except for saturated solutions that are irritating to the eyes, the general concentration below 5% is almost non-toxic and non-irritating.
In fact, the concentration of 0.2% for chemical products has a good antibacterial effect.
Paraben is also widely used in liquids, injections, ointments, pills, tablets, bandages, and surgical instruments for sterilization and antisepsis, as well as for the cleaning and disinfection of surgical instruments.
In industry, it is used for the antiseptic and anti-mildew of oil, fat, starch, and rubber solution. In short, it has broad development prospects.
Ethylparaben preservative is a “bacteriostatic agent”, not a fungicide.
This means that bacteria can not multiply in a certain concentration of the preservative solution, but they can survive. When the concentration is lower than this concentration, the bacteria can multiply.
In other words, microorganisms that cannot reproduce under a certain concentration of ester preservatives will start to grow and reproduce again when you dilute the preservatives in the environment.