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Max % at cool down phase
What is the max % ingredients you wouldn’t exceed at the cool down phase? Is 10% pushing it? And is 5% a good rule of thumb? Assuming cool down phase consists mainly of heat sensitive ingredients such as hydrolysed protein, extracts in glycerin, and the usual vitamin E, 0.5% essential oil and preservative/s.
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1 Reply
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It really depends on the formula / emulsification system. 10% might be fine for some systems.
In fact, we used to do what was called a “quench cooling” method with one of our hair conditioners. We would add 25% cold water after creating the emulsion. This rapidly cooled the system so instead of taking 8 hours to make a batch we could do it in 2 hours. And we didn’t have any stability problems in that formula.
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