Germaben is heat sensitive and should be added to the water phase or to the emulsified portion of the formulation at a temperature of 130°F or below, during the cool down stage, prior to adding fragrance. Adding Germaben above 130°F could result in compromising the preservative system in your product. what other additives would you like to use? Some are harder to preserve. You would also need to recalculate your preservative if you add something else.
_________________ Irena Closed minds are like faulty parachutes; they refuse to open.
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