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Will Zinc pyrithione precipitate or do creaming in this shampoo formula?
This is a simple shampoo formula
SLES 9%
CAPB 3%
Water
Thickened with nacl
If i add 2% Zinc pyrithione in this formula without any suspending agent, will zinc pyrithine precipitate at the bottom or cream to the top of shampoo bottle?
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9 Replies
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6467360/<div>
</div><div>Zinc pyrithione can be dissolved by forming coordinate bonds with N-acyl-EDTA.
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</div><div>https://www.gallinee.com/what-is-zinc-pyrithione-being-banned/
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</div><div>Unless you’re an advanced chemist, please don’t try to make this at home. </div>
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Do not use EDTA in a ZPT formula. It is not a matter of solution - it is no longer ZPT but the soluble sodium salt (PT) that will not deposi , not impact dandruff and will increase chemical risk due to PT solubility.
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Thank
Any comments about my question?
If it is not suspended, with it cream like dimethicone or precipitate like EGDS?
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It would sink
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Suspension and deposition are as important as the ZPT active. You might look ar some of the P&G patents and article by Jim Schwartz re coacervate technology
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Thanks
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I made this researchement just for you @Abdullah because you are always helping others. https://www.hallstarbeauty.com/formula/zinc-pyrithione-based-antidandruff-shampoo/
hallstarbeauty.com
Zinc Pyrithione-Based Antidandruff Shampoo | Hallstar BPC
This antidandruff shampoo formulation uses particulate zinc pyrithione as its active ingredient, and HallStar® SAB-2N Flake to maintain the active ingredient in dispersed form. HallStar® SAB-2N Flake also contributes opacity as well as desirable rheological properties to the finished product. By … Continue reading
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Thank a lot 👍
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You are welcome.
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