Hello
recommend 0.1%
If you fill it up, you should add it
กันเสีย as well, such as Mild Preservative Eco and add how many % or You don't have to fill it. Thank you
Normally, germs can't grow in oil. But if producing products for sale We will never know when the product is in the hands of the consumer. Is there any chance of moisture getting into the packaging? which for this reason therefore may consider adding
สารกันเสีย to make sure no matter what There will be no problems with the germs in the formula.
Mild Preserved Eco Recommended 1% yes