Compatibility of Water in Oil EZ and Butter Cream Maker

Based on the information provided, Water in Oil EZ and Butter Cream Maker are not compatible and cannot be used together in the same formula. They are designed for different types of emulsions:

• Water in Oil EZ: Creates water-in-oil (W/O) emulsions.
• Butter Cream Maker: Creates oil-in-water (O/W) emulsions.

Mixing emulsifiers for different systems will likely lead to instability and separation, as observed in your formula.

To address the separation issue in your sunscreen formula using Water in Oil EZ, you should remove the Butter Cream Maker. The staff's advice suggests that the separation is likely due to the incompatibility of the two emulsifiers and potentially a slightly low amount of Water in Oil EZ for the high oil content (34%).

Here are the recommended approaches to stabilize your Water in Oil EZ formula (without Butter Cream Maker), based on the staff's replies:

1. Increase Water in Oil EZ: If you are not using a Gel Maker, increase the concentration of Water in Oil EZ from 2.5% to 3-3.5% to better handle the 34% oil phase.
2. Add a Stabilizer: Incorporate a Gel Maker (such as Xanthan Gum, AnyGel, or Pro Polymer) or an Oil-in-Water Stabilizer (like Oil-Fix) into the formula. These ingredients can help improve the stability of the Water in Oil EZ emulsion.
3. Using Gel Maker with Water in Oil EZ: If you use a Gel Maker, you might not need to increase Water in Oil EZ all the way to 3.5%, but reducing it below 2.5% is unlikely to be effective.