Water-in-Oil Emulsion Stability and Water Resistance with Specific Mixer
Question
I am formulating a Water-in-Oil formula with the following composition:
- Oil/Silicone: 10%
- Water: 72%
- Pro Polymer (Thickener): 0.8%
I want the formula to be water-resistant using Water in Oil EZ. I have a mixing head of the type mentioned by the staff (mechanical stirring with a high-impact head, not a whisk or frother). What percentage of Water in Oil EZ should I use, and how does the mixing method affect the stability and water resistance of the formula?
Answer
Based on your formula composition (10% oil/silicone, 72% water, 0.8% Pro Polymer thickener) and your goal of achieving water resistance using Water in Oil EZ, a concentration of 1.5% Water in Oil EZ should be sufficient.
However, as the staff mentioned, achieving a stable emulsion with Water in Oil EZ heavily relies on the mixing method. It requires mechanical stirring with a suitable high-impact head (not a whisk or frother) at a minimum speed of 500 RPM. Mixing for typically less than 5 minutes should be sufficient if the correct equipment is used.
Ensuring the proper mixing technique is key to preventing separation and achieving a stable, water-resistant formula with Water in Oil EZ.
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