Cosmetics Formulation Development

Cica Sleeping Mask Base to say that there is no สารกันเสีย in case we add substances such as to be dissolved in water Will it not cause damage or mold? Please give advice.

In the formula there is Ethylhexylglycerin that can can inhibit infection but can claim that there is no สารกันเสีย

Cica Sleeping Mask Base Where do you put it? Path A is water, Path B is Cetyl Alcohol + Vitamin E C is an extract, should be boiled and dissolved in Part B? Will all the substances be liquid and will collapse? Or should I put it after A+B?

Hello Cica Sleeping Mask Base is a base that can be used to add ingredients to a recipe, for example Cica Sleeping Mask Base + TECA 1%