Hello
สารกันเสีย used in cosmetic products are designed to include To be restricted to use (% rate as permitted by the FDA and not to exceed the said rate) just for the purpose of controlling the infection in the product only. It is not sustained until when applied to the skin
Prebio-care , which is known as a prebiotic substance, helps beneficial bacteria grow well when on the skin (but not growing when in the product, because
สารกันเสีย controlled) and no Got any problems with
สารกันเสีย in the formula.