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What are some general guidelines for making a heat protectant?
Hello, I am looking to add a heat protectant to my product line but have been struggling to find good articles and formulas on them as they all seem to be very different from the ones I have found. I was wondering if there are good rules of thumb when making a heat protectant? For instance it’s commonly stated that Conditioners should have around 1.5-4.0% cationics, 1.0-2.0% silicones, etc. Any help would be appreciated!
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