Clarification on PE-1 Aqua: Function, Solubility, and Mixing

Regarding your questions about PE-1 Aqua:

1. Does it transport water-soluble or oil-soluble substances?
   PE-1 Aqua is designed to help transport water-soluble substances into the skin. It is not intended for oil-soluble substances.

2. Why the confusion about dissolving in oil?
   The confusion arises because the solubility of PE-1 Aqua itself is different from the type of substance it helps transport. PE-1 Aqua has an oil-like characteristic, meaning it dissolves in the oil phase of a formulation. However, its function is specifically to enhance the penetration of water-soluble active ingredients into the skin. So, you dissolve the PE-1 Aqua in oil, but it works on water-soluble ingredients.

3. When should PE-1 Aqua be added?
   Since PE-1 Aqua is considered part of the oil phase in a formula due to its solubility, it should be added when you are incorporating the oil phase into your formulation, following your specific recipe's steps.