Cosmetics Formulation Development

I want to make a toner from rice water. As you can see from the Net, it can be stored in the refrigerator for no more than 1 week. If you want to keep it outside the refrigerator and have a longer shelf life of 1 year, it must contain substances. กันเสีย Which one can I get?

Hello, members can choose to top up สารกันเสีย capable of controlling infection. well into the formula, but the problem with this kind of formula not a matter of สารกันเสีย but it's about infection control That comes from rice water. Adding สารกันเสีย any kind in that cosmetics must be subject to the condition that In the formula, there must be no high amount of adulterants (usually the germ rate must not exceed 100 CFU / 1 gram, CFU = Colony Forming Unit). The infection can be controlled under the use of สารกันเสีย not exceeding as specified by the DOE, another meaning is If members choose to use สารกันเสีย in high quantity will be able to control the infection. In this formula But the said rate will exceed the safe rate at the level specified by the FDA.

thank you