Using Phospholipid (Hydrogenated Lecithin) in Eye Cream Formulation

Regarding your questions about using Phospholipid in an eye cream formula:

• Can Phospholipid at 2% be mixed into an eye cream formula?
  Yes, it can be used at 2%. However, adding it to an existing formula might make the formula thicker.
• Since Phospholipid acts as an Emulsifier, is another water and oil binder needed for an eye cream formula?
  While Phospholipid can function as an emulsifier, its emulsifying efficiency is not high. If your formula contains only a small amount of oil, it can work without issues. You can use a Gel Maker to create the gel texture for the formula, and then use Phospholipid to emulsify water, oil, and silicone. However, if the oil content exceeds 5%, long-term separation might occur.
• If another binder is needed, which one and at what percentage?
  Based on the staff's response, it seems they are referring to the usage percentage of Phospholipid itself, suggesting 2-3%. They advise against using it at a very high rate as it will make the texture too thick and unpleasant to use. The response does not explicitly recommend another specific binder.