How to Add Preservatives and Fragrances to Formulations

Based on your question and the information provided, here is a guide on how to add preservatives and fragrances to your cosmetic formulations:

• For Cream or Gel Formulas (containing emulsifiers):
  Preservatives and fragrances are typically oil-soluble or disperse well in formulas containing emulsifiers (like cream or gel bases). In these types of formulas, you can often add preservatives and fragrances directly into the main mixture. Examples of emulsifiers include Sucrose Cream Maker™ or Emulsifying Wax 1000.

• For Purely Water-Based Formulas (like toners):
  If your formula is entirely water-based and does not contain oils or emulsifiers, you will need to use a solubilizer to help the fragrance disperse evenly in the water. Products like Flora Solve™ Clear are designed for this purpose. You would typically mix the fragrance with the solubilizer first before adding this mixture to the water base.

• Preservatives:
  Many preservatives, such as Mild Preserved™ COS or NaturePreserve™ LB2, are water-soluble or can be added directly to the formula depending on their specific properties and the formula type. Always check the usage instructions for the specific preservative you are using.

• Fragrances:
  Fragrances are generally added towards the end of the formulation process to minimize exposure to heat, which can degrade the scent.

In summary, the method of adding preservatives and fragrances depends on the type of formula you are making. For cream/gel bases, direct addition is often possible. For water-based formulas, a solubilizer is usually required for fragrances.